<![CDATA[Stories by Skilled Coder on Medium]]> https://medium.com/@skilledcoder?source=rss-2cb2643d098a------2 https://cdn-images-1.medium.com/fit/c/150/150/1*VdyzJXs9C1tq3M8AAvrQ3w.png Stories by Skilled Coder on Medium https://medium.com/@skilledcoder?source=rss-2cb2643d098a------2 Medium Sun, 15 Nov 2026 11:20:06 GMT <![CDATA[System Design Preparation Master Sheet]]>

A complete system design interview preparation guide for software engineer

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]]> https://skilledcoder.medium.com/system-design-preparation-master-sheet-4a5b7f82add9?source=rss-2cb2643d098a------2 https://medium.com/p/4a5b7f82add9 Fri, 03 Jul 2026 05:44:26 GMT 2026-07-03T05:44:26.346Z <![CDATA[How Netflix Would Design a Feature Flag System]]>

Not as an if-else wrapper. As a control plane for safely changing production behavior.

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]]> https://skilledcoder.medium.com/how-netflix-would-design-a-feature-flag-system-c4cbe1ce76e8?source=rss-2cb2643d098a------2 https://medium.com/p/c4cbe1ce76e8 Wed, 24 Jun 2026 11:41:00 GMT 2026-06-24T11:41:00.867Z <![CDATA[Java Features That Eliminate Entire Categories of Bugs]]>

How modern Java features can make certain bugs impossible to write

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]]> https://skilledcoder.medium.com/java-features-that-eliminate-entire-categories-of-bugs-20cc402e71fa?source=rss-2cb2643d098a------2 https://medium.com/p/20cc402e71fa Mon, 22 Jun 2026 10:21:20 GMT 2026-06-22T13:27:09.639Z <![CDATA[Creative Ways to Use Java in Real Systems]]>

Using Java Features in Ways Most Developers Never Consider

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]]> https://skilledcoder.medium.com/creative-ways-to-use-java-in-real-systems-3160559e206b?source=rss-2cb2643d098a------2 https://medium.com/p/3160559e206b Thu, 18 Jun 2026 14:54:56 GMT 2026-06-25T05:56:44.854Z <![CDATA[What 1 Million DAU Actually Costs]]>

A line-by-line cost model for running a typical web product at one million daily active users

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]]> https://skilledcoder.medium.com/what-1-million-dau-actually-costs-741056bfcb53?source=rss-2cb2643d098a------2 https://medium.com/p/741056bfcb53 Mon, 25 May 2026 16:17:08 GMT 2026-05-25T16:17:08.659Z <![CDATA[Simple Java Questions That Reveals Real Understanding]]>

Can You Answer These Java Questions Correctly?

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]]> https://skilledcoder.medium.com/simple-java-questions-that-reveals-real-understanding-fbfd355d55e4?source=rss-2cb2643d098a------2 https://medium.com/p/fbfd355d55e4 Thu, 07 May 2026 15:28:23 GMT 2026-05-07T15:28:23.953Z <![CDATA[How Do You Design a System Where 1% of Data Causes 90% of the Load?]]>

Taming Hot Keys, Celebrity Problems, and Skewed Workloads

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]]> https://skilledcoder.medium.com/how-do-you-design-a-system-where-1-of-data-causes-90-of-the-load-4412d508501f?source=rss-2cb2643d098a------2 https://medium.com/p/4412d508501f Sun, 12 Apr 2026 13:40:43 GMT 2026-04-12T13:41:36.204Z <![CDATA[AI Benchmarks Explained: What Every Score Actually Means]]>

What Every Score Actually Means (And Why You Should Care)

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]]> https://skilledcoder.medium.com/ai-benchmarks-explained-what-every-score-actually-means-3504f88e2ee5?source=rss-2cb2643d098a------2 https://medium.com/p/3504f88e2ee5 Wed, 08 Apr 2026 09:33:03 GMT 2026-04-08T09:33:03.370Z <![CDATA[How to Create Your Own Redis]]>

Build your own in-memory key-value store and know how redis works internally

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]]> https://skilledcoder.medium.com/how-to-create-your-own-redis-5738ab04c067?source=rss-2cb2643d098a------2 https://medium.com/p/5738ab04c067 Tue, 31 Mar 2026 14:23:34 GMT 2026-03-31T14:23:34.671Z <![CDATA[System Design Principles You Can’t Ignore in the AI Era]]>

Why traditional system design principles matter more than ever

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