DevGuide
Level up daily with insider dev hacks, smart career tips, and real talk! 🚀 ⚡️ Stay connected with me: linktr.ee/AliSamir
Show more📈 Analytical overview of Telegram channel DevGuide
Channel DevGuide (@the_developer_guide) is an active participant. Currently, the community unites 10 939 subscribers, ranking 11 261 in the Technologies & Applications category and 10 652 in the Iraq region.
📊 Audience metrics and dynamics
Since its creation on невідомо, the project has demonstrated rapid growth, gathering an audience of 10 939 subscribers.
According to the latest data from 29 October, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by -18 over the last 30 days and by -1 over the last 24 hours, overall reach remains high.
- Verification status: Not verified
- Engagement rate (ER): The average audience engagement rate is 8.58%. Within the first 24 hours after publication, content typically collects 2.69% reactions from the total number of subscribers.
- Post reach: On average, each post receives 939 views. Within the first day, a publication typically gains 294 views.
- Reactions and interaction: The audience actively supports content: the average number of reactions per post is 3.
- Thematic interests: Content is focused on key topics such as مَشرُوع, حَاجَة, بَيَان, جِدّ, طَلَب.
📝 Description and content policy
The author describes the resource as a platform for expressing subjective opinions:
“Level up daily with insider dev hacks, smart career tips, and real talk! 🚀
⚡️ Stay connected with me: linktr.ee/AliSamir”
Thanks to the high frequency of updates (latest data received on 30 October, 2026), the channel maintains relevance and a high level of publication reach. Analytics show that the audience actively interacts with content, making it an important point of influence in the Technologies & Applications category.
Access-Control-Allow-Originاللي بيحدد الـ origins اللي مسموح ليها تطلب بيانات من السيرفر ده. لو الـ origin بتاع موقعك موجود في القيمة بتاعت الـ header ده، السيرفر هيسمح بتنفيذ الطلب وهيرجعلك الـ response. ولو لل، الطلب هيتمنع وهيجيلك error من نوع CORS في المتصفح. ——— 📍 كمان فيه Headers تانية زي: - الـ Access-Control-Allow-Methods: اللي بتحدد أنواع الطلبات اللي مسموح ليك تعملها (GET, POST, PUT, DELETE...). - الـ Access-Control-Allow-Headers: اللي بتحدد الـ headers اللي مسموح ليك تبعتها في الطلبات. - الـ Access-Control-Allow-Credentials: لو الطلب محتاج يبعت Cookies أو بيانات معينة، لازم الـ header ده يبقى موجود ومظبوط على true. ——— وفقكم الله لكل خير 🌿
🟢 𝗕𝗲𝗴𝗶𝗻𝗻𝗲𝗿 / 𝗝𝘂𝗻𝗶𝗼𝗿 𝗟𝗲𝘃𝗲𝗹1. What is Node.js? 2. Why is Node.js single-threaded? 3. What is the V8 engine? 4. What is the Event Loop? 5. Difference between Node.js and JavaScript in the browser. 6. What are global objects in Node.js? 7. What is npm? 8. What is package.json? 9. What is module.exports? 10. Difference between require and import. 11. What is callback? 12. What is asynchronous programming? 13. What is Promise? 14. Difference between Promise and callback. 15. What is async/await? 16. What is REPL? 17. What is middleware? 18. What is Express.js? 19. What is REST API? 20. How do you handle errors in Node.js? ———
🟡 𝗠𝗶𝗱-𝗟𝗲𝘃𝗲𝗹 (𝟮–𝟱 𝗬𝗲𝗮𝗿𝘀 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲)21. What is non-blocking I/O? 22. How does the Event Loop work internally? 23. Difference between process.nextTick and setImmediate. 24. What are streams in Node.js? 25. Types of streams. 26. What is Buffer? 27. What is clustering? 28. How do you handle multiple requests? 29. How do you manage environment variables? 30. What is CORS? 31. How do you secure Node.js APIs? 32. What is JWT authentication? 33. How do you connect Node.js with databases? 34. Difference between SQL and NoSQL in Node.js apps. 35. What is Mongoose? 36. How do you handle file uploads? 37. What is rate limiting? 38. How do you implement pagination? 39. How do you handle logging? 40. How do you test Node.js applications? ———
🔵 𝗦𝗲𝗻𝗶𝗼𝗿 / 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁 𝗟𝗲𝘃𝗲𝗹41. Explain Node.js architecture. 42. How do you scale Node.js applications? 43. What is horizontal vs vertical scaling? 44. How do you handle CPU-intensive tasks? 45. How do you design microservices in Node.js? 46. How do you handle inter-service communication? 47. What is message queue usage in Node.js? 48. How do you implement caching? 49. What is Redis used for? 50. How do you handle memory leaks? 51. How do you monitor Node.js applications? 52. How do you implement CI/CD for Node.js? 53. How do you secure APIs at enterprise level? 54. How do you handle API versioning? 55. How do you manage secrets? 56. What are Node.js performance bottlenecks? 57. How do you implement graceful shutdown? 58. What are common Node.js anti-patterns? 59. How do you design fault-tolerant systems? 60. When should you NOT use Node.js?
Learn About Operating Systems In-Depth 💯For many types of software engineers it is important to understand the fundamentals of operating systems. ——— Course Link👇🏻 https://youtu.be/yK1uBHPdp30
Software Engineering Blogs ✍️A curated list of engineering blogs https://github.com/kilimchoi/engineering-blogs
