Computer Science and Programming

06 Jun 2024 20:28

Google will discontinue Cloud Source Repositories

🔗 https://cloud.google.com/source-repositories/docs

Computer Science and Programming

04 Jun 2024 14:14

40 Tips From A Senior to a Junior developer.

Part I:

1. Master the Basics: Ensure you have a strong grasp of fundamental programming concepts.
2. Write Readable Code: Prioritize readability over cleverness.
3. Use Version Control: Learn Git and make frequent commits with meaningful messages.
4. Understand Your Tools: Get familiar with your IDE, debugger, and terminal.
5. Comment Wisely: Use comments to explain why, not what.
6. Practice Problem-Solving: Regularly work on coding challenges to improve your skills.
7. Learn Design Patterns: Study common design patterns and their use cases.
8. Ask Questions: Don’t hesitate to seek help when stuck.
9. Read Documentation: Thoroughly read the documentation for libraries and frameworks you use.
10. Write Tests: Develop a habit of writing unit and integration tests.
11. Refactor Regularly: Continuously improve your codebase.
12. Learn Debugging: Master the art of debugging to solve issues efficiently.
13. Understand Algorithms: Study common algorithms and their complexities.
14. Keep Learning: Stay updated with new technologies and industry trends.
15. Build Projects: Work on side projects to apply what you learn.
16. Use Code Reviews: Participate in code reviews to learn from others and improve your code.
17. Learn SQL: Know how to work with databases and write efficient queries.
18. Learn about the business domain you’re working in.
19. Build relationships with other developers.
20. Stay Organized: Use task management tools to keep track of your work.

Computer Science and Programming

31 May 2024 12:39

#bugs

Github CoPilot Re-Enables Itself After Being Disabled

🔗 https://github.com/microsoft/vscode-copilot-release/issues/1248

Computer Science and Programming

28 May 2024 06:06

SQL at 50: What’s next for the structured query language?

🔗 https://www.infoworld.com/article/3715453/sql-at-50-whats-next-for-the-structured-query-language.html

Computer Science and Programming

27 May 2024 20:17

New Regular expression (Regex) functions in Excel

🔗 https://insider.microsoft365.com/en-us/blog/new-regular-expression-regex-functions-in-excel

Computer Science and Programming

23 May 2024 10:13

What's New in Kotlin 2.0.0

🔗 https://kotlinlang.org/docs/whatsnew20.html

Computer Science and Programming

20 May 2024 16:16

2024 will be the most profitable year in crypto🚀 Take advantage of this opportunity.

You can increase your capital by simply following Crypto Baron. His analysis is often copied by many other crypto channels.

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Computer Science and Programming

04 May 2024 02:41

Harvard CS50 – Free Computer Science Course (2023 Edition)

Here are the lectures included in this course:

Lecture 0 - Scratch
Lecture 1 - C
Lecture 2 - Arrays
Lecture 3 - Algorithms
Lecture 4 - Memory
Lecture 5 - Data Structures
Lecture 6 - Python
Lecture 7 - SQL
Lecture 8 - HTML, CSS, JavaScript
Lecture 9 - Flask
Lecture 10 - Emoji
Cybersecurity

https://www.freecodecamp.org/news/harvard-university-cs50-computer-science-course-2023/

Computer Science and Programming

03 May 2024 14:32

🖥 Searchable table in Python using Flet

This tutorial will show you how to create an interactive table using Flet.
Moreover, with search and filtering functions, which is very cool 🔥

🔜 Step by step tutorial

Computer Science and Programming

02 May 2024 15:48

They predicted yesterday the DUMP of Bitcoin

Already in the channel published the dates of the next BTC PUMP!

Click 👉 CHECK NEXT PUMP DATES 👈
Click 👉 CHECK NEXT PUMP DATES 👈
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Computer Science and Programming

28 Apr 2024 19:19

Use KeePassXC to sign your git commits

🔗 https://code.mendhak.com/keepassxc-sign-git-commit-with-ssh/

Computer Science and Programming

18 Apr 2024 21:02

Who's here? 
We've asked for a free link to a paid channel, for our subs.
x2-x3 Signals here

👉 CLICK HERE TO JOIN 👈
👉 CLICK HERE TO JOIN 👈
👉 CLICK HERE TO JOIN 👈

❗️JOIN FAST! FIRST 1000 SUBS WILL BE ACCEPTED

Computer Science and Programming

17 Apr 2024 12:18

¡Hola! 👋🏻
AmigoChat - AI GPT bot. Best friend and assistant:
- generate images
- get ideas and hashtags for social media
- write SEO texts
- rewrite and summarize longreads
- choose a promotion plan
- chat and ask questions
Everything is FREE because amigos don't take dineros for help! 🤠

Computer Science and Programming

16 Apr 2024 13:49

𝗛𝗼𝘄 𝗱𝗼𝗲𝘀 𝗗𝗶𝘀𝗰𝗼𝗿𝗱 𝗵𝗮𝗻𝗱𝗹𝗲 𝗮 𝗺𝗶𝗹𝗹𝗶𝗼𝗻 𝗼𝗻𝗹𝗶𝗻𝗲 𝘂𝘀𝗲𝗿𝘀 𝗶𝗻 𝗮 𝘀𝗶𝗻𝗴𝗹𝗲 𝘀𝗲𝗿𝘃𝗲𝗿?

As time passed, the overall size of Discord's user base, including its most prominent communities, has grown massively. This affected servers that started to slow down and hit their throughput limits. So, they needed to scale individual Discord servers from tens of thousands to millions of concurrent users.

Whenever someone sends a message on Discord or joins a channel, they need to update the date UI of everyone online on that server. They call that server a "𝗴𝘂𝗶𝗹𝗱," which runs in a 𝘀𝗶𝗻𝗴𝗹𝗲 𝗘𝗹𝗶𝘅𝗶𝗿 𝗽𝗿𝗼𝗰𝗲𝘀𝘀, while there is another process (a "𝘀𝗲𝘀𝘀𝗶𝗼𝗻") for each connected client. The guild process tracks sessions of users who are members of that guild and are responsible for actions to those sessions. When sessions get updates, forward them to the web socket socket to the client.

The main issue is that 𝗮 𝘀𝗶𝗻𝗴𝗹𝗲 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 𝗻𝗲𝗲𝗱𝘀 𝘁𝗼 𝗴𝗼 𝘁𝗼 𝘁𝗵𝗲 𝗻𝘂𝗺𝗯𝗲𝗿 𝗼𝗳 𝗽𝗲𝗼𝗽𝗹𝗲 𝗼𝗻𝗹𝗶𝗻𝗲 on that server, which means if a server has 1000 people online and they all send a message once, that's 1 million notifications.

Computer Science and Programming

15 Apr 2024 17:26

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Computer Science and Programming

04 Jun 2024 16:19

40 Tips From A Senior to a Junior developer.

Part II:

21. Optimize Code: Write efficient code but avoid premature optimization.
22. Understand basic security practices.
23. Maintain good documentation for your projects.
24. Follow Best Practices: Adhere to industry best practices and coding standards.
25. Work on Soft Skills: Improve communication and teamwork skills.
26. Stay Humble: Be open to feedback and willing to admit mistakes.
27. Contribute to Open Source: Participate in open source projects to gain experience.
28. Practice Pair Programming: Collaborate with peers to solve problems together.
29. Understand the Full Stack: Gain knowledge of both front and back-end development.
30. Automate Repetitive Tasks: Use scripts and tools to automate repetitive tasks.
31. Monitor Performance: Use tools to monitor and improve application performance.
32. Keep Code Simple: Aim for simplicity in your code.
33. Learn from Mistakes: Analyze and learn from your errors.
34. Set Goals: Define and work towards personal and professional goals.
35. Be Patient: Development takes time; be patient with your learning process.
36. Read Books: Invest time in reading programming and technology books.
37. Join Communities: Engage in developer communities.
38. Stay Healthy: Maintain a healthy work-life balance.
39. Use Modern Practices: Embrace agile, DevOps, and continuous integration/deployment practices.
40. Mentor Others

Computer Science and Programming

02 Jun 2024 12:43

What's New in C# 13: Enhanced Params, Performance Boosts, and New Extension Types

🔗 https://www.infoq.com/news/2024/05/csharp-13-preview/

Computer Science and Programming

29 May 2024 12:12

It's time for Stack Overflow's annual Developer Survey! From your preferred programming languages, the new tech you want to explore, and much, much more, we're calling all who code to weigh in.

Take the survey: https://stackoverflow.az1.qualtrics.com/jfe/form/SV_6rJVT6XXsfTo1JI?utm_medium=social&utm_source=twitter&utm_campaign=dev-survey-2024&utm_content=

Computer Science and Programming

27 May 2024 23:02

🚀 New Telegram Channel Alert!
We've discovered a gem for AI enthusiasts: AI.News.Daily!

Why follow AI.News.Daily? It's your go-to for:

• Daily AI Breakthroughs: Get updates every day.
• Expert Insights: Learn from the pros with easy-to-understand advice.
• Monetization Tips: Turn AI into profit.

Top picks from their channel:

• ChatGPT Prompts: Boost your productivity with these 7 mind-blowing prompts.
• Website Building: Explore top AI tools for web development.
• Comprehensive Guide: Dive into a 45-page tutorial on AI models like Gemini.
• Word Processing Tools: Discover the best AI tools for all your writing needs.
• AI Selection Tool: Compare AIs by price, view detailed graphs, and explore leaderboards.

Curious? There's more to explore!

👉Check them out: @ainews_daily

Computer Science and Programming

25 May 2024 15:19

Uber Migrates 1 Trillion Records from DynamoDB to LedgerStore to Save $6 Million Annually

🔗 https://www.infoq.com/news/2024/05/uber-dynamodb-ledgerstore/

Computer Science and Programming

21 May 2024 19:54

Amber - the programming language compiled to Bash

https://amber-lang.com/ https://amber-lang.com/

Computer Science and Programming

13 May 2024 18:02

The Crypto AI Revolution Has Begun 💹

Algowave is set to revolutionize automated risk-tolerance trading pools, game changing signals, and over 14 months of dedicated development to refine the world class platform supported by the $ALGO token 

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/channel/+i_6klrm-uodiNGY5

Computer Science and Programming

03 May 2024 19:35

Who's here?

We've asked for a free link to a paid channel, for our subs.
x2-x3 Signals here


👉 CLICK HERE TO JOIN 👈
👉 CLICK HERE TO JOIN 👈
👉 CLICK HERE TO JOIN 👈

❗️JOIN FAST! FIRST
1000 SUBS WILL BE ACCEPTED

Computer Science and Programming

03 May 2024 14:01

Direct-a-Video: driving Video Generation

Direct-a-Video is a text-to-video generation framework that allows users to individually or jointly control the camera movement and/or object motion. Authors: City University of HK, Kuaishou Tech & Tianjin.

𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬:
✅ Decoupling camera/object motion in gen-AI
✅ Allowing users to independently/jointly control
✅ Novel temporal cross-attention for cam motion
✅ Training-free spatial cross-attention for objects
✅ Driving object generation via bounding boxes

Paper: https://arxiv.org/pdf/2402.03162.pdf
Project: https://direct-a-video.github.io/

Computer Science and Programming

01 May 2024 10:14

A library for building fast, reliable and evolvable network services

💻 https://github.com/cloudflare/pingora/tree/main

Computer Science and Programming

18 Apr 2024 23:18

Challenging programming projects you should try:

🔗https://jamesg.blog/2024/02/28/programming-projects/https://jamesg.blog/2024/02/28/programming-projects/

Computer Science and Programming

18 Apr 2024 18:53

𝗛𝗼𝘄 𝘁𝗼 𝗰𝗼𝗱𝗲 𝘄𝗶𝘁𝗵 𝗚𝗶𝘁𝗛𝘂𝗯 𝗖𝗼𝗽𝗶𝗹𝗼𝘁?

A recent study by GitHub and Microsoft discovered that AI now authors 46% of new code. They also found that overall developer productivity surged by 55%, leading to more efficient coding processes. When we talk about AI-powered coding, we mainly talk about GitHub Copilot.

But 𝗵𝗼𝘄 𝗚𝗶𝘁𝗛𝘂𝗯 𝗖𝗼𝗽𝗶𝗹𝗼𝘁 𝘄𝗼𝗿𝗸𝘀?

The process goes in the following steps:

𝟭. 𝗦𝗲𝗰𝘂𝗿𝗲 𝗽𝗿𝗼𝗺𝗽𝘁 𝘁𝗿𝗮𝗻𝘀𝗺𝗶𝘀𝘀𝗶𝗼𝗻: Your prompts are securely sent to Copilot, ensuring data privacy.

𝟮. 𝗖𝗼𝗻𝘁𝗲𝘅𝘁𝘂𝗮𝗹 𝘂𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴: Copilot analyzes the code around your cursor, the file type, and other open files to offer relevant suggestions.

𝟯. 𝗖𝗼𝗻𝘁𝗲𝗻𝘁 𝗳𝗶𝗹𝘁𝗲𝗿𝗶𝗻𝗴: It filters out personal data and inappropriate content, focusing solely on generating helpful code.

𝟰. 𝗖𝗼𝗱𝗲 𝗴𝗲𝗻𝗲𝗿𝗮𝘁𝗶𝗼𝗻: Based on the intent identified in your prompts, Copilot crafts code suggestions that align with your coding style and project standards.

𝟱. 𝗨𝘀𝗲𝗿 𝗶𝗻𝘁𝗲𝗿𝗮𝗰𝘁𝗶𝗼𝗻: Here, we can decide whether to use, tweak, or reject Copilot's suggestions.

𝟲. 𝗙𝗲𝗲𝗱𝗯𝗮𝗰𝗸 𝗹𝗼𝗼𝗽: Copilot learns from your interactions, improving its suggestions. Every time you tweak or reject its ideas, he knows from it. It employs techniques like zero-shot (asking without examples), one-shot (asking with an example), and few-shot learning (providing multiple examples) to adapt to our instructions, whether you provide examples or not.

𝟳. 𝗣𝗿𝗼𝗺𝗽𝘁 𝗵𝗶𝘀𝘁𝗼𝗿𝘆 𝗿𝗲𝘁𝗲𝗻𝘁𝗶𝗼𝗻: It remembers past prompts and interactions, making future suggestions more accurate.

Computer Science and Programming

16 Apr 2024 13:49

So, how they solved it? 𝗧𝗵𝗲𝘆 𝗳𝗶𝗿𝘀𝘁 𝘁𝗿𝗶𝗲𝗱 𝘁𝗼 𝘂𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱 𝗵𝗼𝘄 𝘁𝗵𝗲 𝘀𝘆𝘀𝘁𝗲𝗺 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝘀. They tracked what Elixir processes were doing, if they were stuck waiting on something, etc. They recorded the event types, how many of each kind of message they received, and their processing times. In addition, they tried to understand how much memory they use, the performances of garbage collectors, etc.

After the analysis, they 𝗰𝗿𝗲𝗮𝘁𝗲𝗱 𝘁𝗵𝗲 𝗳𝗼𝗹𝗹𝗼𝘄𝗶𝗻𝗴 𝘀𝘁𝗿𝗮𝘁𝗲𝗴𝘆:

𝟭. 𝗣𝗮𝘀𝘀𝗶𝘃𝗲 𝘀𝗲𝘀𝘀𝗶𝗼𝗻𝘀: Discord significantly reduced the amount of data processed and sent by differentiating between active and passive user connections, cutting the fanout work by 90% for large servers.

𝟮. 𝗥𝗲𝗹𝗮𝘆𝘀: Implementing a relay system (read - multithreading) allowed Discord to split the fanout process across multiple machines, enabling a single guild to utilize more resources and support more prominent communities. Relays maintain connections to the sessions instead of the guild and are responsible for doing fanout with permission checks.

𝟯. 𝗪𝗼𝗿𝗸𝗲𝗿 𝗽𝗿𝗼𝗰𝗲𝘀𝘀𝗲𝘀 𝗮𝗻𝗱 𝗘𝗧𝗦: To maintain server responsiveness, Discord employed worker processes and Erlang Term Storage (ETS) for operations requiring iteration over large sets of members, thus avoiding bottlenecks in the guild process. ETS is an in-memory database that supports the ability of multiple Elixir processes to access it safely. This enables the creation of a new worker process and passes the ETS table so this process can run expensive operations and offload the central guild server.

🔗https://discord.com/blog/maxjourney-pushing-discords-limits-with-a-million-plus-online-users-in-a-single-server

Computer Science and Programming

15 Apr 2024 19:30

𝟮𝟬 𝗦𝗤𝗟 𝗾𝘂𝗲𝗿𝘆 𝗼𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻 𝘁𝗲𝗰𝗵𝗻𝗶𝗾𝘂𝗲𝘀

Below are the SQL query optimization techniques that I found to be significant, listed in the top 20:

1. Create an index on huge tables (>1.000.000) rows
2. Use EXIST() instead of COUNT() to find an element in the table
3. SELECT fields instead of using SELECT *
4. Avoid Subqueries in WHERE Clause
5. Avoid SELECT DISTINCT where possible
6. Use WHERE Clause instead of HAVING
7. Create joins with INNER JOIN (not WHERE)
8. Use LIMIT to sample query results
9. Use UNION ALL instead of UNION wherever possible
10. Use UNION where instead of WHERE ... or ... query.
11. Run your query during off-peak hours
12. Avoid using OR in join queries
14. Choose GROUP BY over window functions
15. Use derived and temporary tables
16. Drop the index before loading bulk data
16. Use materialized views instead of views
17. Avoid != or <> (not equal) operator
18. Minimize the number of subqueries
19. Use INNER join as little as possible when you can get the same output using LEFT/RIGHT join.
20. Frequently try to use temporary sources to retrieve the same dataset.

Computer Science and Programming

13 Apr 2024 14:24

𝗦𝘁𝗮𝗰𝗸 𝗢𝘃𝗲𝗿𝗳𝗹𝗼𝘄 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 𝗜𝘀 𝗡𝗼𝘁 𝗪𝗵𝗮𝘁 𝗬𝗼𝘂 𝗠𝗲𝗮𝗻 𝗜𝘁 𝗜𝘀

In the recent interview with Scott Hanselman, 𝗥𝗼𝗯𝗲𝗿𝘁𝗮 𝗔𝗿𝗰𝗼𝘃𝗲𝗿𝗱𝗲, 𝗛𝗲𝗮𝗱 𝗢𝗳 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 𝗮𝘁 𝗦𝘁𝗮𝗰𝗸 𝗢𝘃𝗲𝗿𝗳𝗹𝗼𝘄, revealed the story about the architecture of Stack Overflow. They handle more than 6000 requests per second, 2 billion page views per month, and they manage to render a page in about 12 milliseconds. If we think about it a bit, we could imagine they use some kind of 𝗺𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻 𝘁𝗵𝗮𝘁 𝗿𝘂𝗻𝘀 𝗶𝗻 𝘁𝗵𝗲 𝗖𝗹𝗼𝘂𝗱 𝘄𝗶𝘁𝗵 𝗞𝘂𝗯𝗲𝗿𝗻𝗲𝘁𝗲𝘀.

But the story is a bit different. Their solution is 15 years old, and it is a 𝗯𝗶𝗴 𝗺𝗼𝗻𝗼𝗹𝗶𝘁𝗵𝗶𝗰 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗿𝘂𝗻𝗻𝗶𝗻𝗴 𝗼𝗻-𝗽𝗿𝗲𝗺𝗶𝘀𝗲𝘀. It is actually 𝗮 𝘀𝗶𝗻𝗴𝗹𝗲 𝗮𝗽𝗽 on IIS, which runs 200 sites. This single app is running on nine web servers and a single SQL Server (with the addition of one hot standby).

They also use 𝘁𝘄𝗼 𝗹𝗲𝘃𝗲𝗹𝘀 𝗼𝗳 𝗰𝗮𝗰𝗵𝗲, one on SQL Server with large RAM (1.5TB), where they have 30% of DB access in RAM and also they use two Redis servers (master and replica). Besides this, they have 3 tag engine servers and 3 Elastic search servers, which are used for 34 million daily searches.

All this is handled by a 𝘁𝗲𝗮𝗺 𝗼𝗳 𝟱𝟬 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝘀, who manage to 𝗱𝗲𝗽𝗹𝗼𝘆 𝘁𝗼 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝗶𝗻 𝟰 𝗺𝗶𝗻𝘀 several times daily.

Their 𝗳𝘂𝗹𝗹 𝘁𝗲𝗰𝗵 𝘀𝘁𝗮𝗰𝗸 is:

🔹 C# + ASP. NET MVC
🔹 Dapper ORM
🔹 StaeckExchange Redis
🔹 MiniProfiler
🔹 Jil JSON Deseliazier
🔹 Exceptional logger for SQL
🔹 Sigil, a .Net CIL generation helper (for when C# isn’t fast enough)
🔹 NetGain, a high-performance web socket server
🔹 Opserver, monitoring dashboard polling most systems and feeding from Orion, Bosun, or WMI.
🔹 Bosun, backend monitoring system, written in Go