https://sahilchalke.com/ 2026-09-06 weekly 1.0 https://sahilchalke.com/skills 2026-09-06 monthly 0.8 https://sahilchalke.com/skills/qa-verify-and-record 2026-09-06 monthly 0.7 https://sahilchalke.com/skills/test-runner-loop 2026-09-06 monthly 0.7 https://sahilchalke.com/skills/write-e2e-from-ticket 2026-09-06 monthly 0.7 https://sahilchalke.com/skills/write-unit-tests 2026-09-06 monthly 0.7 https://sahilchalke.com/skills/diff-review 2026-09-06 monthly 0.7 https://sahilchalke.com/skills/pr-reviewer 2026-09-06 monthly 0.7 https://sahilchalke.com/skills/resolve-review-comments 2026-09-06 monthly 0.7 https://sahilchalke.com/skills/conventional-commit 2026-09-06 monthly 0.7 https://sahilchalke.com/skills/jj-workflow 2026-09-06 monthly 0.7 https://sahilchalke.com/skills/react-prop-chain 2026-09-06 monthly 0.7 https://sahilchalke.com/skills/react-stale-closure 2026-09-06 monthly 0.7 https://sahilchalke.com/skills/react-notify-modal 2026-09-06 monthly 0.7 https://sahilchalke.com/skills/code-quality 2026-09-06 monthly 0.7 https://sahilchalke.com/skills/start-feature 2026-09-06 monthly 0.7 https://sahilchalke.com/skills/issue-file-upload 2026-09-06 monthly 0.7 https://sahilchalke.com/skills/slack-relay 2026-09-06 monthly 0.7 https://sahilchalke.com/uses 2026-09-06 monthly 0.5 https://sahilchalke.com/toolkit 2026-09-06 monthly 0.6 https://sahilchalke.com/Sahil-Chalke-Resume.pdf 2026-09-06 monthly 0.9 https://sahilchalke.com/blog/writing-a-coding-agent-by-hand 2026-09-06 yearly 0.7 https://sahilchalke.com/og/writing-a-coding-agent-by-hand.png I wrote a coding agent by hand https://sahilchalke.com/blog/building-a-production-grade-rag-pipeline 2026-09-05 yearly 0.7 https://sahilchalke.com/og/building-a-production-grade-rag-pipeline.png Production RAG: what the demo leaves out https://sahilchalke.com/blog/rag-pipeline-architecture.webp Three-layer architecture diagram. Offline indexing sends 41 PDFs through PyPDFLoader, a recursive character splitter and OpenAI embeddings into a Qdrant Cloud collection that stores a dense and a BM25 sparse vector per chunk. Query time is a LangGraph state machine running retrieve, rerank, grade and generate, with a not-relevant branch that rewrites the query and loops back to retrieval for up to two retries. The serving layer puts a Next.js frontend on Vercel and a FastAPI backend on Render, with LangSmith tracing every run and an offline RAGAS suite scoring it. https://sahilchalke.com/blog/rag-langsmith-trace.webp LangSmith trace view of one graph run for the question what does LoRA freeze during fine-tuning. The waterfall shows a LangGraph root span at 3.25 seconds and 2.811 thousand tokens costing 0.0005 dollars, broken into retrieve_node at 0.85 seconds, grade_node at 1.13 seconds wrapping a gpt-4o-mini call, route_after_grade at 0.00 seconds, and generate_node at 1.21 seconds. The right panel shows the grade node input, listing the retrieved chunk IDs and their page content. https://sahilchalke.com/blog/your-download-count-is-lying-to-you 2026-08-23 yearly 0.7 https://sahilchalke.com/og/your-download-count-is-lying-to-you.png Your download count is lying to you https://sahilchalke.com/blog/building-a-terminal-ui-in-rust-with-ratatui 2026-08-23 yearly 0.7 https://sahilchalke.com/og/building-a-terminal-ui-in-rust-with-ratatui.png Building a terminal UI in Rust with Ratatui https://sahilchalke.com/blog/shipping-a-cli-to-homebrew-pypi-and-crates-io 2026-08-23 yearly 0.7 https://sahilchalke.com/og/shipping-a-cli-to-homebrew-pypi-and-crates-io.png Shipping a CLI to Homebrew, PyPI and crates.io https://sahilchalke.com/blog/react-19-in-production-what-actually-changed 2026-08-23 yearly 0.7 https://sahilchalke.com/og/react-19-in-production-what-actually-changed.png React 19 in production: what actually changed https://sahilchalke.com/blog/schema-driven-ui-rendering-content-from-a-type 2026-08-23 yearly 0.7 https://sahilchalke.com/og/schema-driven-ui-rendering-content-from-a-type.png Schema-driven UI: this post is a data structure https://sahilchalke.com/blog/what-mcp-is-and-what-it-replaces 2026-08-23 yearly 0.7 https://sahilchalke.com/og/what-mcp-is-and-what-it-replaces.png MCP, explained by what it actually replaces https://sahilchalke.com/blog/rag-or-long-context-how-to-choose 2026-08-23 yearly 0.7 https://sahilchalke.com/og/rag-or-long-context-how-to-choose.png RAG or long context: how to actually choose https://sahilchalke.com/blog/how-real-time-collaborative-editing-works 2026-08-23 yearly 0.7 https://sahilchalke.com/og/how-real-time-collaborative-editing-works.png How real-time collaborative editing works https://sahilchalke.com/blog/micro-frontends-make-the-complexity-earn-it 2026-08-23 yearly 0.7 https://sahilchalke.com/og/micro-frontends-make-the-complexity-earn-it.png Micro-frontends: make the complexity earn it https://sahilchalke.com/blog/typescript-patterns-that-survive-a-big-codebase 2026-08-23 yearly 0.7 https://sahilchalke.com/og/typescript-patterns-that-survive-a-big-codebase.png The TypeScript patterns that survive a big codebase https://sahilchalke.com/blog/recalldsa-spaced-repetition-for-dsa 2026-08-21 yearly 0.7 https://sahilchalke.com/og/recalldsa-spaced-repetition-for-dsa.png RecallDSA: spaced repetition for coding interview practice https://sahilchalke.com/blog/lazygocd-terminal-ui-for-gocd 2026-08-21 yearly 0.7 https://sahilchalke.com/og/lazygocd-terminal-ui-for-gocd.png lazygocd: a terminal dashboard for GoCD that feels local https://sahilchalke.com/blog/what-claude-code-leaves-on-disk 2026-08-18 yearly 0.7 https://sahilchalke.com/og/what-claude-code-leaves-on-disk.png What Claude Code leaves on disk, and what you can build from it https://sahilchalke.com/blog/turn-repeat-work-into-ai-skills 2026-07-01 yearly 0.7 https://sahilchalke.com/og/turn-repeat-work-into-ai-skills.png Stop re-explaining yourself to the AI: turn repeat work into skills https://sahilchalke.com/blog/debug-with-ai-not-guesses 2026-06-25 yearly 0.7 https://sahilchalke.com/og/debug-with-ai-not-guesses.png Debug with the AI, not by guessing: a hypothesis-first loop https://sahilchalke.com/blog/make-ai-grill-your-plan 2026-06-20 yearly 0.7 https://sahilchalke.com/og/make-ai-grill-your-plan.png Make the AI argue with you before you build https://sahilchalke.com/blog/aws-shared-responsibility-model 2026-07-01 yearly 0.7 https://sahilchalke.com/og/aws-shared-responsibility-model.png Security of the cloud vs security in the cloud https://sahilchalke.com/blog/aws-regions-availability-zones 2026-06-30 yearly 0.7 https://sahilchalke.com/og/aws-regions-availability-zones.png Regions, zones and edges: the geography of the cloud https://sahilchalke.com/blog/aws-three-types-of-storage 2026-06-29 yearly 0.7 https://sahilchalke.com/og/aws-three-types-of-storage.png Block, file, object: the only three kinds of cloud storage https://sahilchalke.com/blog/how-dns-actually-works 2026-06-22 yearly 0.7 https://sahilchalke.com/og/how-dns-actually-works.png How DNS actually works (and why it breaks your deploys) https://sahilchalke.com/blog/load-balancers-and-cdns 2026-06-10 yearly 0.7 https://sahilchalke.com/og/load-balancers-and-cdns.png Load balancers & CDNs, explained at a chai stall https://sahilchalke.com/blog/docker-in-one-sentence 2026-05-24 yearly 0.7 https://sahilchalke.com/og/docker-in-one-sentence.png Docker in one sentence: a beginner's mental model https://sahilchalke.com/blog/spaced-repetition-for-engineers 2026-05-08 yearly 0.7 https://sahilchalke.com/og/spaced-repetition-for-engineers.png Stop forgetting what you learn: spaced repetition for engineers https://sahilchalke.com/blog/killing-flaky-tests 2026-04-28 yearly 0.7 https://sahilchalke.com/og/killing-flaky-tests.png Tests that don't lie: how to kill flaky tests https://sahilchalke.com/blog/working-with-ai-pair-programmers 2026-04-09 yearly 0.7 https://sahilchalke.com/og/working-with-ai-pair-programmers.png The blank file is dead: how to actually work with AI pair programmers https://sahilchalke.com/blog/feeding-context-to-llms 2026-03-26 yearly 0.7 https://sahilchalke.com/og/feeding-context-to-llms.png Garbage in, confident nonsense out: feeding context to an LLM https://sahilchalke.com/blog/choosing-boring-technology 2026-03-11 yearly 0.7 https://sahilchalke.com/og/choosing-boring-technology.png Boring technology wins: how to choose a stack https://sahilchalke.com/blog/linux-commands-worth-knowing 2026-02-22 yearly 0.7 https://sahilchalke.com/og/linux-commands-worth-knowing.png The Linux commands I reach for every single day https://sahilchalke.com/blog/what-happens-when-you-deploy 2026-02-06 yearly 0.7 https://sahilchalke.com/og/what-happens-when-you-deploy.png From localhost to the world: what actually happens when you deploy https://sahilchalke.com/blog/ghostty-tmux-claude-code 2026-07-02 yearly 0.7 https://sahilchalke.com/og/ghostty-tmux-claude-code.png A terminal-native setup for coding with an AI: Ghostty, tmux, Claude Code https://sahilchalke.com/blog/guardrail-hooks-for-a-coding-agent 2026-07-02 yearly 0.7 https://sahilchalke.com/og/guardrail-hooks-for-a-coding-agent.png Guardrails for a coding agent: hooks that just say no https://sahilchalke.com/blog/quality-gate-hooks-that-keep-diffs-clean 2026-07-02 yearly 0.7 https://sahilchalke.com/og/quality-gate-hooks-that-keep-diffs-clean.png The quiet hooks that keep your diffs clean https://sahilchalke.com/blog/fan-out-then-refute-multi-agent-review 2026-07-02 yearly 0.7 https://sahilchalke.com/og/fan-out-then-refute-multi-agent-review.png Fan out, then refute: reviewing code with a panel of agents