BlogsEngineering notes and occasional observations.https://wthrajat.comen-usStart with boundaries before serviceshttps://wthrajat.com/blogs/monolith-boundaryhttps://wthrajat.com/blogs/monolith-boundaryService splits work better when the domain boundary is already clear.Mon, 20 Jul 2026 16:45:00 GMTTecharchitecturebackendsystemswth.rajat@gmail.comWhat my site sends before it says hellohttps://wthrajat.com/blogs/site-before-hellohttps://wthrajat.com/blogs/site-before-helloA small request audit of the portfolio, because first paint is also part of the personality.Thu, 16 Jul 2026 13:35:00 GMTTechwebperfastrofrontendwth.rajat@gmail.comA postmortem for an outage that only affected mehttps://wthrajat.com/blogs/postmortem-only-mehttps://wthrajat.com/blogs/postmortem-only-meTiny incidents still deserve timelines, because future me is also a user.Fri, 10 Apr 2026 20:35:00 GMTTechincidentdebuggingopswth.rajat@gmail.comConvocation and chaos (I)https://wthrajat.com/blogs/convocation-chaoshttps://wthrajat.com/blogs/convocation-chaosUni again, questionable dress codes, and no sleepTue, 24 Mar 2026 11:15:00 GMTPersonallifeuniversitybullshitwth.rajat@gmail.comPrompt logs are observability datahttps://wthrajat.com/blogs/prompt-logs-observabilityhttps://wthrajat.com/blogs/prompt-logs-observabilityIf an agent makes a weird decision, normal logs are not enough to debug it.Sun, 22 Feb 2026 06:00:00 GMTTechaiobservabilitydebuggingwth.rajat@gmail.comThe invisible bottleneck called JSONhttps://wthrajat.com/blogs/invisible-bottleneck-jsonhttps://wthrajat.com/blogs/invisible-bottleneck-jsonFramework overhead is fun to benchmark, but JSON can quietly eat the request.Fri, 13 Feb 2026 19:40:00 GMTTechperformancebackendbenchmarkjsonwth.rajat@gmail.comOverhead of web frameworkshttps://wthrajat.com/blogs/go-web-frameworkshttps://wthrajat.com/blogs/go-web-frameworksSome benchmarks of Go's standard library against popular frameworks.Thu, 05 Feb 2026 19:30:00 GMTTechgolangbenchmarkwebdevwth.rajat@gmail.comYour MCP server is a production API wearing a hoodiehttps://wthrajat.com/blogs/mcp-server-production-apihttps://wthrajat.com/blogs/mcp-server-production-apiTool calls are still API calls. They need auth, logs, timeouts, and limits.Sun, 18 Jan 2026 15:45:00 GMTTechaimcpsecurityapi-designwth.rajat@gmail.comWho owns agent-written code six months later?https://wthrajat.com/blogs/agent-code-six-monthshttps://wthrajat.com/blogs/agent-code-six-monthsAgent code is still code. If I merge it, I have to own it later.Sat, 04 Oct 2025 19:10:00 GMTTechaimaintenancecode-reviewwth.rajat@gmail.comSQLite is simple until it has a queue behind ithttps://wthrajat.com/blogs/sqlite-queuehttps://wthrajat.com/blogs/sqlite-queueSQLite is lovely, but a background worker can make the single-writer rule very visible.Sat, 19 Jul 2025 13:15:00 GMTTechsqlitedatabasesbackendwth.rajat@gmail.comThe benchmark lied because my laptop was plugged inhttps://wthrajat.com/blogs/benchmark-lied-laptop-plugged-inhttps://wthrajat.com/blogs/benchmark-lied-laptop-plugged-inA tiny rant about local benchmarks, power modes, thermals, and why numbers need context.Thu, 03 Apr 2025 17:50:00 GMTTechbenchmarkperformancetoolingwth.rajat@gmail.comHealth checks lie in very specific wayshttps://wthrajat.com/blogs/health-checks-liehttps://wthrajat.com/blogs/health-checks-lieA green endpoint can mean the process is alive, not that the product works.Sat, 21 Dec 2024 03:55:00 GMTTechreliabilitybackendobservabilitywth.rajat@gmail.com