<![CDATA[Stories by Umesh Kumar Yadav on Medium]]> https://medium.com/@umeshcapg?source=rss-15a815fbff55------2 https://cdn-images-1.medium.com/fit/c/150/150/1*Tf54OEWBcwlddSz7jrZffg.jpeg Stories by Umesh Kumar Yadav on Medium https://medium.com/@umeshcapg?source=rss-15a815fbff55------2 Medium Sat, 14 Nov 2026 00:31:33 GMT <![CDATA[Is Spring Boot 4 delivering explosive performance?]]>

Spring Boot 4.1 + JDK 25 vs. Spring Boot 3.3 + JDK 21: A Deep Dive into Performance, Virtual Threads, AOT Compilation, and Migration…

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]]> https://medium.com/@umeshcapg/is-spring-boot-4-delivering-explosive-performance-e124804857fd?source=rss-15a815fbff55------2 https://medium.com/p/e124804857fd Fri, 13 Nov 2026 05:23:32 GMT 2026-11-13T05:23:32.925Z <![CDATA[The Java Service Worked for 3 Days… I spent 72 hours battling a 10MB Java OOM.]]>

A real-world Java production incident that taught me why small coding mistakes can become massive memory leaks.

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]]> https://levelup.gitconnected.com/the-java-service-worked-for-3-days-i-spent-72-hours-battling-a-10mb-java-oom-7d5872cb9ae2?source=rss-15a815fbff55------2 https://medium.com/p/7d5872cb9ae2 Fri, 13 Nov 2026 04:37:08 GMT 2026-11-13T17:17:16.761Z <![CDATA[How to Log Out a User From All Devices? Designing Session Invalidation in Java and Spring Boot]]>

Imagine you are building an application like Netflix, Amazon, or Google.

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]]> https://medium.com/@umeshcapg/how-to-log-out-a-user-from-all-devices-designing-session-invalidation-in-java-and-spring-boot-b9c01830d75a?source=rss-15a815fbff55------2 https://medium.com/p/b9c01830d75a Fri, 13 Nov 2026 04:25:22 GMT 2026-11-13T04:25:22.901Z <![CDATA[How to Design a Ride-Hailing System Like Uber : A Complete System Design Guide]]>

An end-to-end system design covering microservices, real-time driver tracking, geospatial indexing, order dispatching, Redis, message…

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]]> https://medium.com/@umeshcapg/how-to-design-a-ride-hailing-system-like-uber-a-complete-system-design-guide-5121669b6adb?source=rss-15a815fbff55------2 https://medium.com/p/5121669b6adb Wed, 11 Nov 2026 19:57:56 GMT 2026-11-11T19:57:56.664Z <![CDATA[Why are more and more people using AI Gateway?]]>

AI development is evolving rapidly.

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]]> https://medium.com/@umeshcapg/why-are-more-and-more-people-using-ai-gateway-285e4a373f09?source=rss-15a815fbff55------2 https://medium.com/p/285e4a373f09 Wed, 11 Nov 2026 18:39:06 GMT 2026-11-11T18:39:06.026Z <![CDATA[Why are more and more people using FastMCP?]]>

The Model Context Protocol (MCP) is rapidly changing how AI applications interact with external systems.

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]]> https://medium.com/javarevisited/why-are-more-and-more-people-using-fastmcp-4e4f8b8dd208?source=rss-15a815fbff55------2 https://medium.com/p/4e4f8b8dd208 Tue, 10 Nov 2026 08:48:56 GMT 2026-11-10T14:27:49.243Z <![CDATA[Why are more and more people using JEV?]]>

A while ago, a fellow player told me that their team encountered a particularly frustrating problem while optimizing their AI customer…

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]]> https://levelup.gitconnected.com/why-are-more-and-more-people-using-jev-70d92e672bbb?source=rss-15a815fbff55------2 https://medium.com/p/70d92e672bbb Tue, 10 Nov 2026 03:34:59 GMT 2026-11-11T16:08:58.105Z <![CDATA[Which is better, Codex or Claude Code?]]>

OpenAI Codex vs Anthropic Claude Code: Architecture, Multi-Agent Systems, Benchmarks, Pricing, Token Efficiency and Real-World Developer…

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]]> https://blog.stackademic.com/which-is-better-codex-or-claude-code-8742223e689c?source=rss-15a815fbff55------2 https://medium.com/p/8742223e689c Mon, 09 Nov 2026 15:40:57 GMT 2026-11-09T15:40:57.352Z <![CDATA[How does Kafka guarantee that a consumption operation is only performed once?]]>

How Does Kafka Prevent Duplicate Message Consumption? Understanding At-Least-Once, Exactly-Once, and Idempotency

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]]> https://medium.com/javarevisited/how-does-kafka-guarantee-that-a-consumption-operation-is-only-performed-once-8b3bfb1d828e?source=rss-15a815fbff55------2 https://medium.com/p/8b3bfb1d828e Sun, 08 Nov 2026 19:34:08 GMT 2026-11-11T15:27:28.356Z <![CDATA[How should I respond if I’m mocked in an interview for storing my tokens in Redis?]]>

Storing Tokens in Redis? How to Defend Your Architecture Decision in a Java Backend Interview

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]]> https://levelup.gitconnected.com/how-should-i-respond-if-im-mocked-in-an-interview-for-storing-my-tokens-in-redis-58a160ad53fe?source=rss-15a815fbff55------2 https://medium.com/p/58a160ad53fe Sun, 08 Nov 2026 18:18:48 GMT 2026-11-09T16:22:36.310Z