Tumpreet Singh — LogsTechnical logs on real-time backend systems, ML in production, and the tooling around them.https://dev.tumpreet.com/en-usWhy my portfolio ships (almost) zero JavaScripthttps://dev.tumpreet.com/blog/zero-javascript-portfolio/https://dev.tumpreet.com/blog/zero-javascript-portfolio/A backend dev does not need 200KB of framework to render a page. Astro islands + hand-written CSS.Thu, 18 Jun 2026 00:00:00 GMTfrontendperformanceastroONNX in production: from Keras notebook to sub-50ms inferencehttps://dev.tumpreet.com/blog/onnx-in-production/https://dev.tumpreet.com/blog/onnx-in-production/Export, verify parity, quantize — the boring steps that make a model actually fast.Sat, 02 May 2026 00:00:00 GMTai-mlperformanceServing a TensorFlow model behind FastAPI with request batchinghttps://dev.tumpreet.com/blog/tensorflow-fastapi-batching/https://dev.tumpreet.com/blog/tensorflow-fastapi-batching/Single-request inference wastes the hardware. A tiny async batcher fixes it without blowing latency.Fri, 10 Apr 2026 00:00:00 GMTai-mlpythonperformancePrompt regression testing: treat your LLM prompts like codehttps://dev.tumpreet.com/blog/prompt-regression-testing/https://dev.tumpreet.com/blog/prompt-regression-testing/Fixtures, deterministic checks, and an LLM-as-judge only where you truly need it.Thu, 05 Mar 2026 00:00:00 GMTai-mltestingWebhooks are a distributed-systems problemhttps://dev.tumpreet.com/blog/webhooks-distributed-systems/https://dev.tumpreet.com/blog/webhooks-distributed-systems/Idempotency, replay and ordering — treat delivery as at-least-once and design accordingly.Thu, 22 Jan 2026 00:00:00 GMTdistributed-systemsbackendA multi-tenant adapter layer that doesn't rot into spaghettihttps://dev.tumpreet.com/blog/multi-tenant-adapter-layer/https://dev.tumpreet.com/blog/multi-tenant-adapter-layer/One SDK contract, many integrations. How to keep per-client logic from metastasizing.Mon, 08 Dec 2025 00:00:00 GMTarchitecturebackendPostgres + Redis patterns for real-time systemshttps://dev.tumpreet.com/blog/postgres-redis-realtime/https://dev.tumpreet.com/blog/postgres-redis-realtime/Postgres as the source of truth, Redis as the hot path — and a clear line between them.Fri, 14 Nov 2025 00:00:00 GMTbackenddatabasesShaving 400ms off voice-AI turn latencyhttps://dev.tumpreet.com/blog/voice-ai-turn-latency/https://dev.tumpreet.com/blog/voice-ai-turn-latency/Streaming TTS and real barge-in are the difference between a phone tree and a conversation.Wed, 01 Oct 2025 00:00:00 GMTbackendrealtimevoice-ai