The conference aims to understand the future of data storage, sustainability, and decentralized technologies. Blockchains provide a decentralized method of storing data and records across a peer-to-peer network without a central authority. However, accidental transactions on blockchains are permanent, so proper precautions must be taken when entering data.
How Blockchain Is Different From Cryptocurrency?Endive Software
Yes, there are some differences, but at the core Blockchain and Cryptocurrency are interconnected. Bitcoin (Cryptocurrency) is the first and most successful application of Blockchain. Initially, they were used interchangeably, but with advancement, some differences can be noticed.
In this case study, we are providing information about the Introduction of Blockchain Technology, Bitcoin and its environment setup, Ethereum coin, other cryptocurrencies, Bitcoin in education, and a case study of healthcare using blockchain.
Once created, smart contracts on the Ethereum blockchain cannot be modified or updated. The article discusses how smart contracts can be "self-destructed" to remove them from the blockchain. It explains that a selfdestruct function sends the contract's funds to a designated address and clears its data. While this eliminates bugs or stops execution, funds sent to a self-destructed contract will be lost. The article concludes by advising self-destructing contracts when no longer needed to stop execution and potentially lower gas costs.
Blockchain is a distributed ledger that records transactions in blocks of data that are linked using cryptography. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data. This design makes blockchains resistant to modification, as altering any block would require recalculating hashes for the entire chain. Blockchain technology provides a decentralized and secure way to record and share data across a network.
Ethereum is the largest decentralized software platform that allows you to build smart contracts and decentralized applications without any downtime and without any third party interference.
VISIT:- http://www.oodlestechnologies.com/online-cryptocurrency-wallet
Blockchain- The Quiet Disruptor - A Guide and a primer to launch Blockchain &...JP Batra
This is a guide and a primer to help you get ready to bring Blockchain technology solutions to your company. Titled "Blockchain - The Quiet Disruptor!" as presented at Global Blockchain Summit in Westminster, Colorado, this is a guide first develops a foundation through a high level understanding of:
* Inefficiencies we are used to, and how Blockchain removes them or reduces their impact
* Main strengths of Blockchain technology
* Public vs. Private Blockchain at a high level
* Business level view of how the technology works, or it's interworking
* Myths surrounding Blockchain, e.g., Blockchain vs Bitcoin, Blockchain vs. DLT as a summary table
* Various consortiums and alliances that developed platforms for use in their industries represented as a table
After foundational work, the presentation and the narratives tie all the foundational blocks together through a hypothetical Healthcare Insurance use case. It also describes the importance of technology selection, Minimum Viable Product (MVP) and Proof of Concept (POC) to test the applicability of Blockchain to a use case one may have developed.
Links have been added to supporting articles to get one prepared for developing their own use cases and help their company gain a competitive advantage or respond fast to competitor threats.
Blockchain for Executives, Entrepreneurs and InvestorsFenbushi Capital
A brief summary of key issues that executives, entrepreneurs and investors across all industries should be aware of when considering blockchain.
First presented 8 June 2018 at the Longhash Incubator in Singapore.
Blockchain technology allows for the creation of a digital ledger that can record transactions and other data across a decentralized network. Each computer that participates in the blockchain network, called a node, has access to and helps maintain the ledger. The ledger is stored across the entire network and is difficult to corrupt, making blockchain suitable for applications like payments, data sharing, digital voting, and supply chain management. Some advantages include traceability, cost effectiveness, quality assurance through origin tracking, and enabling smart contracts. However, challenges remain around digital signature verification, reaching consensus across the decentralized network, and redundancy compared to centralized databases. Widespread adoption may begin in 2020 if blockchain can prove economically viable beyond experimental programs.
What is a Cryptocurrency?
What is the Blockchain?
Why the Blockchain now?
Lets Sum this Blockchain!
Why the “Blockchain” is next IT revolution you have not heard of..
Lets talk about Careers in the Blockchain!
A Quick Start To Blockchain by Seval CaprazSeval Çapraz
Blockchain is one of the most innovative discoveries of the past century.
The first cryptocurrency, Bitcoin, was proposed in 2008 by Satoshi Nakamoto with a white paper.
Blockchain And Cryptocurrency : How Blockchain And Cryptocurrency Relate To E...Blockchain Council
Blockchain Council is a renowned platform providing all the certification and Blockchain courses that will help you make an established career in this field.
Blockchain is a distributed digital ledger that records transactions across a peer-to-peer network. It allows for transparency, where all transactions are visible across the network, and immutability, where transactions cannot be altered once added to the chain. There are two main types - public blockchains that anyone can participate in without permission and private blockchains that require an invitation. Popular blockchain platforms include Bitcoin, Ethereum, Hyperledger, R3 Corda, and others. Blockchain provides benefits like disintermediation, empowering users, high quality transparent data, and lower transaction costs. It can be used in financial areas like payments and supply chain management as well as non-financial areas like medical records and identity management.
Blockchain technology can be applied to space applications like supply chain management, healthcare, and finance. SpaceChain is building a decentralized blockchain infrastructure in space using aerospace engineering and blockchain development expertise. Blockchain uses a distributed ledger of encrypted blocks to securely record transactions without intermediaries. It incentivizes participation and deters hacking through economic incentives like rewards for adding blocks and penalties for malicious acts.
Portia Burton provides an overview of becoming a blockchain professional. She recommends getting a foundation in blockchain technologies, making a list of how blockchain addresses company pain points, and pitching your expertise to your boss. Key steps include creating a career roadmap, learning through courses like Bitcoin and Cryptocurrency Technologies on Udemy, and contributing to open source projects like 21.co and Hyperledger.
The basic idea of decentralization is to distribute control and authority to the peripheries of an organization instead of one central body being in full control of the organization.
Blockchain is a growing list of data blocks that are linked using cryptography. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data. This makes blockchain resistant to modification of the data. The first blockchain was created by Satoshi Nakamoto in 2008 as a public ledger for bitcoin transactions. Blockchain has various applications including cryptocurrencies, financial services, and supply chain management. While it provides benefits of decentralization, security and transparency, blockchain also faces challenges related to scalability, interoperability, regulations and initial costs for banks to implement.
Details in how InfiniteChain is the most practical solution to connect your centralized environment with public blockchain. Ethereum-based InfiniteChain addresses the blockchain bottleneck of privacy, transaction speed and block bloat.
This document provides an overview of blockchain technology and its potential applications. It begins by listing several areas where blockchain could be utilized, such as banking, messaging apps, hedge funds, voting, identity management, and more. It then defines key blockchain concepts like distributed ledger technology, blocks, blockchains, wallets, and the four main types of blockchain. The document explains how blockchain works and why it is tamper-proof through implementing cryptography, hashes, and proof of work. It also provides a brief history of blockchain and discusses some of the main pillars that blockchain technology is built upon like decentralization and transparency.
Blockchain 101 provides an overview of blockchains and distributed ledgers. It explains that a blockchain is a linked list of digital blocks that chronicles events in the lifetime of an entity. Each block contains a cryptographic signature, references the previous block, and may include smart contracts. Blockchains use cryptography and consensus to securely link blocks together, making the chain difficult to modify. Distributed ledgers store identical copies of blockchains across multiple databases, reaching consensus on the data through majority agreement.
Blockchain is a distributed ledger that records transactions in blocks that are linked using cryptography. Each node maintains a copy of the blockchain. Key concepts include:
- Public key cryptography allows nodes to verify transactions without revealing identities.
- Smart contracts enable decentralized applications to execute transactions and store data on the blockchain without an intermediary.
- The Ethereum blockchain supports a Turing-complete scripting language to build decentralized applications with more complex functionality than Bitcoin. It uses ether as its internal currency and charges gas fees to compensate for usage.
CASE STUDY ON EVOTING USING BLOCKCHAIN1.pptxATHULPSUDHEER
This document proposes developing an online voting system using blockchain technology. It describes some of the risks with existing electronic voting systems and how blockchain could help address those risks by enhancing security, transparency, and verifiability. The proposed system would use Ethereum for its smart contract functionality. Key elements discussed include blockchain basics, smart contracts, Solidity for writing smart contracts, MetaMask for user accounts, Ganache for local testing, and Truffle to interact with deployed contracts. Data flow and use case diagrams are presented, as well as the potential for blockchain to enable safer, more transparent online voting.
The document discusses key aspects of blockchain technology including:
1) Blocks in a blockchain contain a hash of the previous block, a timestamp, and transaction data represented as a Merkle tree.
2) Centralized systems have issues like single points of failure, lack of trust, and scalability limitations. Blockchain addresses these through decentralization and immutability.
3) Blockchain maintains immutability through cryptographic hashing of blocks, decentralization across nodes, and consensus algorithms.
This slide is about 'Blockchain Technology'. Blockchain is a method of recording information that makes it impossible or difficult for the system to be changed, hacked, or manipulated. A blockchain is a distributed ledger that duplicates and distributes transactions across the network of computers participating in the blockchain. Blockchain helps verify and trace multistep transactions needing verification and traceability. Cryptocurrencies are usually built using blockchain technology. Blockchain describes the way transactions are recorded into "blocks" and time stamped. It's a fairly complex, technical process, but the result is a digital ledger of cryptocurrency transactions that's hard for hackers to tamper with.
Application of Blockchain Technologies in Digital ForensicsMahdi_Fahmideh
This lecture, from course CIS8708-Digital Forensics (Guide to Computer Forensics and Investigations), discusses the role of blockchain technologies in digital forensics investigation
Blockchain is a distributed ledger system that records transactions in blocks of data that are linked together via cryptography. Each participant maintains a copy of the ledger with all transactions. New transactions are distributed across the network, validated by consensus, and added to each participant's ledger in a new block. The use of cryptography makes the records immutable and resistant to hacking or modification (paragraph 1). Blockchains are composed of blocks of transactions, a chain that links blocks, and a peer-to-peer network of nodes that maintain the complete record (paragraph 2). Blockchain allows peers to transact without a central authority by reaching consensus on transactions and maintaining an identical record of the ledger through cryptography (paragraph 3).
The document provides an overview of a blockchain conference agenda with the following key points:
- The schedule includes sessions on Bitcoin blockchain, use cases, smart contracts, blockchain fundamentals, and blockchain and databases.
- It defines participants, transactions, and contracts on blockchains. Participants are members with identities and roles. Transactions are asset transfers between participants. Contracts set conditions for transactions.
- It explains some core concepts of blockchains including that they are distributed secure logfiles, how they provide transparency and robustness without central control, and how mining and proof-of-work consensus keeps the network secure.
- It discusses the differences between permissioned and unpermissioned ledgers, and considerations for whether
How Drupal & Blockchain Are Changing The Perception Of Decentralized Architec...Shefali Shetty
Have you ever thought about integrating Drupal CMS with Blockchain? Imagine two completely different architectures coming together to build a powerful system.
How Drupal & Blockchain Are Changing The Perception Of Decentralized Architec...Shefali Shetty
Have you ever thought about integrating Drupal CMS with Blockchain? Imagine two completely different architectures coming together to build a powerful system.
Blockchain technology allows for transparent and secure transactions without an intermediary. It has various applications including financial services, smart contracts, IoT, and more. Key benefits are security, transparency, low costs, and reduced time. Blockchain functions by recording transactions in blocks that are linked using cryptography. Programming languages like Java and frameworks like Ethereum and Hyperledger can be used to develop blockchain applications. Databases can also integrate blockchain features to provide a scalable solution for deploying blockchain proofs-of-concept, platforms and applications.
Introduction to blockchain & cryptocurrenciesAurobindo Nayak
This was an intro session on blockchain and cryptocurrencies. If you want to view the webinar for this talk checkout: https://www.youtube.com/watch?v=rl5mVI7jEK0
Blockchain is a growing list of records called blocks that are linked using cryptography. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data. This design makes blockchains resistant to modification, as altering any block would require recalculating hashes for the entire chain. The blockchain is managed by a peer-to-peer network collectively adhering to a protocol for validating new blocks. By design, blockchains are inherently resistant to modification of the data.
Blockchain technology allows for transparent and secure transactions without an intermediary. It has various applications including financial services, smart contracts, IoT, and more. Key benefits are security, transparency, low costs, and reduced time. Blockchain uses a distributed ledger to record transactions in blocks that are linked through cryptography. Popular programming languages for developing blockchain applications include Java, PHP, and .NET. Databases can also integrate blockchain features to provide a scalable solution.
Blockchain, Blockchain Platform, Private and a Public Blockchain?dipankarmondal42
Blockchain does not store any of its information in a central location. Instead, the blockchain is copied and spread across a network of computers. Whenever a new block is added to the blockchain, every computer on the network updates its blockchain to reflect the change. By spreading that information across a network, rather than storing it in one central database, blockchain becomes more difficult to tamper with. If a copy of the blockchain fell into the hands of a hacker, only a single copy of the information, rather than the entire network, would be compromised
Blockchain is a decentralized and distributed ledger system that allows multiple parties to securely record and store information in a transparent and tamper-resistant manner. It works by creating a chain of blocks, with each block containing a set of transactions. This chain is then distributed across a network of computers, making it nearly impossible to alter. Key features of blockchain include decentralization, transparency, immutability, and security. While applications include cryptocurrency, NFTs, and supply chain management, challenges remain around scalability, energy consumption, and potential security flaws from 51% attacks.
Blockchain Computing: Prospects and Challenges for Digital Transformation Pr...eraser Juan José Calderón
Blockchain Computing: Prospects and Challenges for Digital Transformation . Professor Syed Akhter Hossain.
Abstract:
A revolutionary trustable sharable computing outcome, the blockchain is essentially a distributed database of records or public ledger of all transactions originated from digital events and shared among participating parties within a computing framework. Each transaction of the chain in the public ledger is verified by consensus of a majority of the participants in the system and its constituents. Once recorded, information can never be erased and neither altered. The blockchain contains a certain and verifiable record of every single transaction ever made during the business operations. In general sense, the blockchain could be described simply as being a way of storing the information of a transaction, between multiple parties in a trustable way. Recording, sharing, storing and redistributing contents in a secure and decentralized way. Being owned, run and monitored by everybody and without anyone controlling it. Besides, avoiding any kind of modifications or abuses from a central authority. Blockchain technology is non-controversial and has worked flawlessly over the last few years and is being successfully applied to both financial and non-financial world applications and listed as as the most important invention since the Internet itself. Besides, digital transformation is taking off as rapid agent for change as part of the global business convergence. In this article, detail of blockchain technologies is presented from the pe
От прорывной концепции до комплексного решения для компанийPositive Hack Days
This document discusses blockchain technology and its applications. It begins by describing the four types of people who are familiar with blockchain to different degrees. It then discusses blockchain fundamentals like distributed ledgers and smart contracts. Several use cases for blockchain are outlined across multiple industries like finance, healthcare, government and more. The strategy and roadmap for an open blockchain platform is presented, focusing on delivering capabilities for identity, privacy, operations and tools. Execution involves proving blockchain concepts, developing horizontal solutions, and creating industry-specific offerings.
The document discusses blockchain technology. It defines blockchain as a distributed database or ledger that stores information across a network of computers. It explains how blockchain works by structuring data into time-stamped blocks that are linked together in a chain. It then covers key aspects of blockchain like decentralization, transparency, security, and applications such as cryptocurrencies, smart contracts, and supply chain management. The benefits are highlighted as improved accuracy, lower costs, decentralization, and efficient transactions.
Performance Budgets for the Real World by Tammy EvertsScyllaDB
Performance budgets have been around for more than ten years. Over those years, we’ve learned a lot about what works, what doesn’t, and what we need to improve. In this session, Tammy revisits old assumptions about performance budgets and offers some new best practices. Topics include:
• Understanding performance budgets vs. performance goals
• Aligning budgets with user experience
• Pros and cons of Core Web Vitals
• How to stay on top of your budgets to fight regressions
How to Avoid Learning the Linux-Kernel Memory ModelScyllaDB
The Linux-kernel memory model (LKMM) is a powerful tool for developing highly concurrent Linux-kernel code, but it also has a steep learning curve. Wouldn't it be great to get most of LKMM's benefits without the learning curve?
This talk will describe how to do exactly that by using the standard Linux-kernel APIs (locking, reference counting, RCU) along with a simple rules of thumb, thus gaining most of LKMM's power with less learning. And the full LKMM is always there when you need it!
Transcript: Details of description part II: Describing images in practice - T...BookNet Canada
This presentation explores the practical application of image description techniques. Familiar guidelines will be demonstrated in practice, and descriptions will be developed “live”! If you have learned a lot about the theory of image description techniques but want to feel more confident putting them into practice, this is the presentation for you. There will be useful, actionable information for everyone, whether you are working with authors, colleagues, alone, or leveraging AI as a collaborator.
Link to presentation recording and slides: https://bnctechforum.ca/sessions/details-of-description-part-ii-describing-images-in-practice/
Presented by BookNet Canada on June 25, 2024, with support from the Department of Canadian Heritage.
Coordinate Systems in FME 101 - Webinar SlidesSafe Software
If you’ve ever had to analyze a map or GPS data, chances are you’ve encountered and even worked with coordinate systems. As historical data continually updates through GPS, understanding coordinate systems is increasingly crucial. However, not everyone knows why they exist or how to effectively use them for data-driven insights.
During this webinar, you’ll learn exactly what coordinate systems are and how you can use FME to maintain and transform your data’s coordinate systems in an easy-to-digest way, accurately representing the geographical space that it exists within. During this webinar, you will have the chance to:
- Enhance Your Understanding: Gain a clear overview of what coordinate systems are and their value
- Learn Practical Applications: Why we need datams and projections, plus units between coordinate systems
- Maximize with FME: Understand how FME handles coordinate systems, including a brief summary of the 3 main reprojectors
- Custom Coordinate Systems: Learn how to work with FME and coordinate systems beyond what is natively supported
- Look Ahead: Gain insights into where FME is headed with coordinate systems in the future
Don’t miss the opportunity to improve the value you receive from your coordinate system data, ultimately allowing you to streamline your data analysis and maximize your time. See you there!
UiPath Community Day Kraków: Devs4Devs ConferenceUiPathCommunity
We are honored to launch and host this event for our UiPath Polish Community, with the help of our partners - Proservartner!
We certainly hope we have managed to spike your interest in the subjects to be presented and the incredible networking opportunities at hand, too!
Check out our proposed agenda below 👇👇
08:30 ☕ Welcome coffee (30')
09:00 Opening note/ Intro to UiPath Community (10')
Cristina Vidu, Global Manager, Marketing Community @UiPath
Dawid Kot, Digital Transformation Lead @Proservartner
09:10 Cloud migration - Proservartner & DOVISTA case study (30')
Marcin Drozdowski, Automation CoE Manager @DOVISTA
Pawel Kamiński, RPA developer @DOVISTA
Mikolaj Zielinski, UiPath MVP, Senior Solutions Engineer @Proservartner
09:40 From bottlenecks to breakthroughs: Citizen Development in action (25')
Pawel Poplawski, Director, Improvement and Automation @McCormick & Company
Michał Cieślak, Senior Manager, Automation Programs @McCormick & Company
10:05 Next-level bots: API integration in UiPath Studio (30')
Mikolaj Zielinski, UiPath MVP, Senior Solutions Engineer @Proservartner
10:35 ☕ Coffee Break (15')
10:50 Document Understanding with my RPA Companion (45')
Ewa Gruszka, Enterprise Sales Specialist, AI & ML @UiPath
11:35 Power up your Robots: GenAI and GPT in REFramework (45')
Krzysztof Karaszewski, Global RPA Product Manager
12:20 🍕 Lunch Break (1hr)
13:20 From Concept to Quality: UiPath Test Suite for AI-powered Knowledge Bots (30')
Kamil Miśko, UiPath MVP, Senior RPA Developer @Zurich Insurance
13:50 Communications Mining - focus on AI capabilities (30')
Thomasz Wierzbicki, Business Analyst @Office Samurai
14:20 Polish MVP panel: Insights on MVP award achievements and career profiling
Hire a private investigator to get cell phone recordsHackersList
Learn what private investigators can legally do to obtain cell phone records and track phones, plus ethical considerations and alternatives for addressing privacy concerns.
Data Protection in a Connected World: Sovereignty and Cyber Securityanupriti
Delve into the critical intersection of data sovereignty and cyber security in this presentation. Explore unconventional cyber threat vectors and strategies to safeguard data integrity and sovereignty in an increasingly interconnected world. Gain insights into emerging threats and proactive defense measures essential for modern digital ecosystems.
Sustainability requires ingenuity and stewardship. Did you know Pigging Solutions pigging systems help you achieve your sustainable manufacturing goals AND provide rapid return on investment.
How? Our systems recover over 99% of product in transfer piping. Recovering trapped product from transfer lines that would otherwise become flush-waste, means you can increase batch yields and eliminate flush waste. From raw materials to finished product, if you can pump it, we can pig it.
AC Atlassian Coimbatore Session Slides( 22/06/2024)apoorva2579
This is the combined Sessions of ACE Atlassian Coimbatore event happened on 22nd June 2024
The session order is as follows:
1.AI and future of help desk by Rajesh Shanmugam
2. Harnessing the power of GenAI for your business by Siddharth
3. Fallacies of GenAI by Raju Kandaswamy
Are you interested in dipping your toes in the cloud native observability waters, but as an engineer you are not sure where to get started with tracing problems through your microservices and application landscapes on Kubernetes? Then this is the session for you, where we take you on your first steps in an active open-source project that offers a buffet of languages, challenges, and opportunities for getting started with telemetry data.
The project is called openTelemetry, but before diving into the specifics, we’ll start with de-mystifying key concepts and terms such as observability, telemetry, instrumentation, cardinality, percentile to lay a foundation. After understanding the nuts and bolts of observability and distributed traces, we’ll explore the openTelemetry community; its Special Interest Groups (SIGs), repositories, and how to become not only an end-user, but possibly a contributor.We will wrap up with an overview of the components in this project, such as the Collector, the OpenTelemetry protocol (OTLP), its APIs, and its SDKs.
Attendees will leave with an understanding of key observability concepts, become grounded in distributed tracing terminology, be aware of the components of openTelemetry, and know how to take their first steps to an open-source contribution!
Key Takeaways: Open source, vendor neutral instrumentation is an exciting new reality as the industry standardizes on openTelemetry for observability. OpenTelemetry is on a mission to enable effective observability by making high-quality, portable telemetry ubiquitous. The world of observability and monitoring today has a steep learning curve and in order to achieve ubiquity, the project would benefit from growing our contributor community.
In this follow-up session on knowledge and prompt engineering, we will explore structured prompting, chain of thought prompting, iterative prompting, prompt optimization, emotional language prompts, and the inclusion of user signals and industry-specific data to enhance LLM performance.
Join EIS Founder & CEO Seth Earley and special guest Nick Usborne, Copywriter, Trainer, and Speaker, as they delve into these methodologies to improve AI-driven knowledge processes for employees and customers alike.
Interaction Latency: Square's User-Centric Mobile Performance MetricScyllaDB
Mobile performance metrics often take inspiration from the backend world and measure resource usage (CPU usage, memory usage, etc) and workload durations (how long a piece of code takes to run).
However, mobile apps are used by humans and the app performance directly impacts their experience, so we should primarily track user-centric mobile performance metrics. Following the lead of tech giants, the mobile industry at large is now adopting the tracking of app launch time and smoothness (jank during motion).
At Square, our customers spend most of their time in the app long after it's launched, and they don't scroll much, so app launch time and smoothness aren't critical metrics. What should we track instead?
This talk will introduce you to Interaction Latency, a user-centric mobile performance metric inspired from the Web Vital metric Interaction to Next Paint"" (web.dev/inp). We'll go over why apps need to track this, how to properly implement its tracking (it's tricky!), how to aggregate this metric and what thresholds you should target.
Navigating Post-Quantum Blockchain: Resilient Cryptography in Quantum Threatsanupriti
In the rapidly evolving landscape of blockchain technology, the advent of quantum computing poses unprecedented challenges to traditional cryptographic methods. As quantum computing capabilities advance, the vulnerabilities of current cryptographic standards become increasingly apparent.
This presentation, "Navigating Post-Quantum Blockchain: Resilient Cryptography in Quantum Threats," explores the intersection of blockchain technology and quantum computing. It delves into the urgent need for resilient cryptographic solutions that can withstand the computational power of quantum adversaries.
Key topics covered include:
An overview of quantum computing and its implications for blockchain security.
Current cryptographic standards and their vulnerabilities in the face of quantum threats.
Emerging post-quantum cryptographic algorithms and their applicability to blockchain systems.
Case studies and real-world implications of quantum-resistant blockchain implementations.
Strategies for integrating post-quantum cryptography into existing blockchain frameworks.
Join us as we navigate the complexities of securing blockchain networks in a quantum-enabled future. Gain insights into the latest advancements and best practices for safeguarding data integrity and privacy in the era of quantum threats.
What's Next Web Development Trends to Watch.pdfSeasiaInfotech2
Explore the latest advancements and upcoming innovations in web development with our guide to the trends shaping the future of digital experiences. Read our article today for more information.
Scaling Connections in PostgreSQL Postgres Bangalore(PGBLR) Meetup-2 - MydbopsMydbops
This presentation, delivered at the Postgres Bangalore (PGBLR) Meetup-2 on June 29th, 2024, dives deep into connection pooling for PostgreSQL databases. Aakash M, a PostgreSQL Tech Lead at Mydbops, explores the challenges of managing numerous connections and explains how connection pooling optimizes performance and resource utilization.
Key Takeaways:
* Understand why connection pooling is essential for high-traffic applications
* Explore various connection poolers available for PostgreSQL, including pgbouncer
* Learn the configuration options and functionalities of pgbouncer
* Discover best practices for monitoring and troubleshooting connection pooling setups
* Gain insights into real-world use cases and considerations for production environments
This presentation is ideal for:
* Database administrators (DBAs)
* Developers working with PostgreSQL
* DevOps engineers
* Anyone interested in optimizing PostgreSQL performance
Contact info@mydbops.com for PostgreSQL Managed, Consulting and Remote DBA Services
How Netflix Builds High Performance Applications at Global ScaleScyllaDB
We all want to build applications that are blazingly fast. We also want to scale them to users all over the world. Can the two happen together? Can users in the slowest of environments also get a fast experience? Learn how we do this at Netflix: how we understand every user's needs and preferences and build high performance applications that work for every user, every time.
What Not to Document and Why_ (North Bay Python 2024)Margaret Fero
We’re hopefully all on board with writing documentation for our projects. However, especially with the rise of supply-chain attacks, there are some aspects of our projects that we really shouldn’t document, and should instead remediate as vulnerabilities. If we do document these aspects of a project, it may help someone compromise the project itself or our users. In this talk, you will learn why some aspects of documentation may help attackers more than users, how to recognize those aspects in your own projects, and what to do when you encounter such an issue.
These are slides as presented at North Bay Python 2024, with one minor modification to add the URL of a tweet screenshotted in the presentation.
What Not to Document and Why_ (North Bay Python 2024)
Blockchain Technology
1. Goals Of This Conference
1.TO UNDERSTAND THE FUTURE OF SAVING DATA
2.TO RUN AGAINST OUR ENVIRONMENT
3.TO KNOW WHERE WE ARE AND WHERE WE ARE GOING TO BE
5.TO UNDERSTAND THE MEANING OF A UNIQUE AND OPEN SOURCE WORLD
Erfan Arefi
UMZ_CS
2. The History Of Saving Data
#We should save our data
because we live by them!
?
Erfan Arefi
UMZ_CS
3. Centralized Databases VS. Distributed Databases
#A DISTRIBUTED DATABASE, IS A DATABASE IN WHICH ALL THE
INFORMATION IS STORED ON MULTIPLE PHYSICAL LOCATIONS
#A CENTRALIZED DATABASE IS A DATABASE THAT IS LOCATED, STORED,
AND MAINTAINED IN A SINGLE LOCATION
Erfan Arefi
UMZ_CS
4. Decentralization Using Concept
Peer-to-peer (P2P) is a decentralized communications model in which
each party has the same capabilities
and either party can initiate a communication session.
Unlike the client/server model, in which the client makes a
service request and the server fulfills the request,
the P2P network model allows each node to function as both a client and server.
Erfan Arefi
UMZ_CS
5. Storing Data Using Storage
Storj is an open source
project that aims to offer a
completely decentralized,
secure, and efficient cloud
storage service, that also
serves as a peer-to-peer
payment system like
Bitcoin
Interplanetary file
System is a protocol
designed to create a
permanent and
decentralized method
of storing and sharing
files
#Each file and all of the blocks within it are given
a unique fingerprint called a cryptographic hash.
#IPFS removes duplications across the network
and tracks version history for every file
#Each network node stores only content it is
interested in, and some indexing information that
helps figure out who is storing what
#When looking up files, you're asking the network to find
nodes storing the content behind a unique hash.
#Every file can be found by human-readable
names using a decentralized naming system
called IPNS.
Erfan Arefi
UMZ_CS
6. #A Blockchain is a continuously growing list of records, called blocks;
is a decentralized and distributed digital ledger which are linked and
secured using cryptography.
Sharing As A Simplest Example Of How Blockchain Works
This is Where The BLOCKCHAIN Comes In
#Proof of Concept
To better explain how blockchain technology can create a true peer-to-peer sharing
economy, let’s look at the following example:
Say you want to rent a car for a short trip from one side of town to the other.
To do so, you could use a mobile app to identify vehicles that are available in
your vicinity. Then, after verifying the digital identities of both yourself and the
vehicle owner, you agree to terms and conditions, such as the fee and duration
of the rental, and buy a micro-insurance policy covering the ride, via an immutable
smart contract. Once the terms and conditions are agreed upon and the smart contract is
created and verified, you can open the car using your smartphone and the payment is directly
deducted from your digital wallet and transferred to the vehicle owner upon completing your trip.
In this scenario, no central authority is needed to agree on transaction terms,
verify payments or screen participants’ identities as all that would be handled by the distributed ledger
technology underlying the transaction.
Erfan Arefi
UMZ_CS
7. #Bitcoin is a type of unregulated digital currency
Also known as a “cryptocurrency”,
Bitcoin transactions are stored and transferred using a distributed ledger on a peer-to-peer network that is open,
public and anonymous. Blockchain is the underpinning technology that maintains the Bitcoin transaction ledger
The Bitcoin blockchain in its simplest form is a database or
ledger comprised of Bitcoin transaction records. However, because this database is distributed
across a peer-to-peer network and is without a central authority, network participants must agree on the
validity of transactions before they can be recorded. This agreement,
which is known as “consensus,” is achieved through a process called “mining.”
+ +
Erfan Arefi
UMZ_CS
8. Who Uses This Technology
A decentralized autonomous
organization (DAO), sometimes
labeled a decentralized
autonomous
corporation (DAC), is
an organization that is run
through rules encoded
as computer
programs called smart
contracts. A DAO's financial
transaction record and
program rules are maintained
on a blockchain
DTube is a decentralized streaming video platform linked
to Steemit (the decentralized social media) which allows
users to upload videos easily and make money (or cryptocurrency)
via the upvotes or likes on their post.
Steemit is a social
news service which runs a
blogging and social
networking website on
top of
a blockchain database,
known as Steem
A smart contract, also known as a cryptocontract, is a computer program that directly
controls the transfer of digital currencies or assets between parties under certain conditions.
These contracts are stored on blockchain technology,
a decentralized ledger that also underpins bitcoin and other cryptocurrencies.
Blockchain is ideal for storing smart contracts because of the technology's security and immutability.
Ethereum is an open-source,
public, blockchain-based distributed computing
platform featuring smart contract (scripting) functionality
Erfan Arefi
UMZ_CS
10. If BLOCKCHAIN Is A Distributed Database
Where Is The Data ?
Blockchains are databases from a high-level view, but the underlying technology
is different enough to make some assumptions inaccurate.
An Excel file is also a database, but with characteristics unneeded/harmful for say, a NoSQL database.
The data "is" on every full node. That is, every client replicates the entire blockchain. This is indeed inefficient,
and future development is aimed towards removing this requirement.
The official specification for the state (that is, the set of all contracts and accounts
and their storage and balance) is a Merkle Patricia Tree. However,
an individual node may implement it internally in whatever way it finds best. (geth uses levelDB for example.)
Every full node has its own copy of the blockchain. The blockchain is stored, distributed,
on every machine in the Bitcoin network being used to mine Bitcoin.
This network is self-regulating and peer-to-peer. There is majority rule,
meaning that if one node on the network no longer agrees with the other nodes
it is kicked out of the network and will have to "resync" its data to be in agreement with the network
Erfan Arefi
UMZ_CS
11. What We Can Do With This Technology
Blockchains can be used for a wide variety of applications, such as
tracking ownership or the provenance of documents, digital assets,
physical assets, IOT, Streaming TV, digital identification system, crypto-currencies or voting rights.
Blockchain technology was popularised by the Bitcoin digital currency system.
But, essentially, a blockchain is just a special kind of database. The Bitcoin
blockchain stores cryptographically signed records of financial transfers,
but blockchain systems can store any kind of data. Blockchains can also
store and run computer code called “smart contracts”.
What makes a blockchain system special is that it doesn’t run on just one computer like a regular database.
Rather, many distributed processing nodes collaborate to run it.
There can be a full copy of the database on every node,
and the system encourages all those nodes to establish a consensus about its contents.
This boosts our confidence in the database and its contents. It’s difficult, if not impossible,
to meddle with the database without others finding out and correcting it.
The global consensus among the nodes about
the integrity and contents of the distributed database is why it’s often called a “distributed ledger”.
Erfan Arefi
UMZ_CS
12. Problems Of A Technology
#MAIN PROBLEM
Here’s the real problem. While your auditors would probably love you,
you may not like what you find in your blockchain.
Accidental transactions are permanent. Once added to the chain,
transactions are there for life (unless you destroy the entire network).
That means making sure what you put in your chain is truly what you want to keep there.
Since every block is encrypted based on the previous block,
undoing a block is impossible without a complete rollback of everything on every node to the point in time.
Erfan Arefi
UMZ_CS
13. Conclusion
#What we should or shouldn’t do!
#Who we are going to be!
#Where is our place in blockchain future!
Erfan Arefi
UMZ_CS