Dark Coder

From struggling with basic loops to solving 1150x LeetCode problems. 134days streak,16badges No shortcuts. Just failures, late nights, self-doubt, and consistency. Some days I wanted to quit. But I kept showing up. Still learning. Still grinding. Yours max streak? #dsa

@SahilExec The main flaw here is like returning all 2M transactions in one request. Works in dev with small data. Dies in production with real scale. Two fixes solution Pagination Proper DB indexing/filtering Scale changes everything.

A junior dev built an endpoint that returns all transactions for a user: GET /api/transactions Response: [ ...all 2 million transactions ] Works fine in development. Times out in production. What's the flaw and what are the two things you add to fix it properly?

I’ll share everything publicly: what I build, what breaks, what I learn, and how I improve every single day. Let’s see where 75 days of obsession takes me.

Day 0/75 Starting today 16 May For the next 75 days,I’m going all in to become a FastAPI Backend Developer and land a startup job. No more random switching. No more consuming tutorials. Just: 1. Python 2. FastAPI 3. PostgreSQL 4. GenAI 5. Building projects Shipping daily

@themishra4402 so what should companies ask that AI does not know?? do AI don't know development?? I mean AI knows everything that's doesn't mean we will stop learning tech stack and problem solving

Why do tech companies still prefer DSA in 2026… when AI can solve most coding problems now? 🤔

@SahilExec That’s why I’m grinding both. • LeetCode 1150+ • Codeforces 170+ • Full-stack/backend development Trying hard to get into strong product-based engineering. Because the salary gap is not about coding syntax anymore. It’s about the level of understanding you can have.

Real backend developer salaries in India — 2026. No sugar coating. 0–1 year (Fresher): → Service companies: ₹3.5–6 LPA → Product startups: ₹6–12 LPA → Remote/global: ₹10–18 LPA 1–3 years (Junior): → Service companies: ₹6–10 LPA → Product startups: ₹12–22 LPA → Remote/global: ₹18–35 LPA 3–6 years (Mid-level): → Service companies: ₹10–18 LPA → Product startups: ₹22–40 LPA → Remote/global: ₹35–70 LPA 6–10 years (Senior): → Service companies: ₹18–28 LPA → Product startups: ₹40–80 LPA → Remote/global: ₹70–150 LPA 10+ years (Staff/Principal): → FAANG India: ₹80–200 LPA → Remote/global: ₹150–300 LPA The gap between service and product companies isn't small. It's generational. The gap between product and remote/global isn't small either. Same skills. Same city. Same experience. Different game being played. Know which game you're in. And whether you want to stay in it.

Step 1: Video uploaded to storage Step 2: Message queue picks it up Step 3: Multiple servers process parallelly Step 4: Each handles one quality (144p → 4K) Step 5: Pushed to CDN globally Step 6: CDN serves from nearest location Distributed Processing + CDN.

System Design Question: User uploads a video on YouTube. How does it become available in 144p, 360p, 720p and 4K? 1. Single Server 2. Distributed Processing 3. Microservices 4. CDN And why?

Step 1: Stop traffic at edge(CDN/WAF) Step 2: Block bot traffic,suspicious IPs Step 3: Protect auth/payment/core APIs Step 4: Disable non-critical endpoints Step 5: Enable aggressive caching Step 6: Add circuit breaker,request queues Step 7: Find and patch the rate limiter bypass

Interviewer: A hacker finds a way to bypass your API rate limiter. 10 million fake requests hit your backend in minutes. What’s your emergency move: block IPs, kill traffic, disable features, or scale infra?

@DeRonin_ Really valuable breakdown. Thanks for filtering the noise and explaining the ranking changes clearly. My biggest takeaways: • Originality > volume • Proof > opinions • Media + context wins • Consistency > spam posting • Strong POVs beat motivational fluff

guys how many leetcode problems have u done till now???

From struggling with basic loops to solving 1150x LeetCode problems. 134days streak,16badges No shortcuts. Just failures, late nights, self-doubt, and consistency. Some days I wanted to quit. But I kept showing up. Still learning. Still grinding. Yours max streak? #dsa

@droidbuilds Guyyy log ke liye 😂

Elon said Instagram is for girls. Then what is X for?

@ysuckme Yes true need to be optimistic in life. I many times feel down and complete silence and things move on and make sense. so need to be positive in life and do the work That's it.

Please get addicted to thinking positively in your life

@XFreeze I saw many people have seen a major drop in their impressions suddenly is it true???

𝕏 just open sourced the latest recommendation algorithm on GitHub 𝕏 is the only major social platform in the world to publicly open source its core recommendation algorithm It is by far the most transparent social platform in the world right now github.com/xai-org/x-algo…

@TheTriceRozay hi

Even if you have 0 followers, Just say Hi, let’s follow you.

@elonmusk He will even get it for sure.

Chris Nolan desecrated the Odyssey so that he would be eligible for an Academy Award …

China built factories. India built coaching centers. One became a $19T economy. One is still fighting to cross $4T. China scaled manufacturing. India scaled exam competition. The talent was always here. The systems were not. Can India still catch up in the next 10–15 years?

@elonmusk @Starlink In-flight WiFi is becoming as important as seat comfort now.Once airlines start offering fast,stable internet through Starlink,passengers will naturally expect the same everywhere. Do you think bad WiFi will become real competitive disadvantage for airlines in the next few years

Most airlines are partnering with @Starlink. The others will have terrible WiFi and lose customers as a result.

i would go with postgresql

Choose one database for your next project: A) MongoDB B) PostgreSQL C) MySQL D) Firebase And give ONE reason why. Curious what developers are actually preferring in 2026.

@Heyyanyaa need to be a good and thoughtful reply guy now....

𝕏 just open-sourced its latest recommendation algorithm on GitHub. Replies carry more weight than likes. A post with 1,000 replies can outperform a post with 1,000 likes.