https://yaseenkhatib.streamerosai.com/blog Yaseen Khatib — Senior Full-Stack Developer (MERN) building production AI systems: Agentic RAG, LLM orchestration, and five solo-shipped products. Open to remote, hybrid, or on-site roles. en https://yaseenkhatib.streamerosai.com/blog/optimistic-react-uis-that-dont-drift-from-the-server/ https://yaseenkhatib.streamerosai.com/blog/optimistic-react-uis-that-dont-drift-from-the-server/ Mon, 27 Jul 2026 10:00:00 GMT How I ship optimistic UI in React without state drift: versioned writes, idempotency keys, React Query/Zustand patterns, and the rollback math. https://yaseenkhatib.streamerosai.com/blog/when-usememo-actually-helps-in-react-19-and-how-to-measure-it/ https://yaseenkhatib.streamerosai.com/blog/when-usememo-actually-helps-in-react-19-and-how-to-measure-it/ Fri, 24 Jul 2026 10:00:00 GMT A blunt, practical guide to useMemo in React 19: where it genuinely helps, where it’s noise, and how to profile renders before you cargo‑cult memoization. https://yaseenkhatib.streamerosai.com/blog/stop-mixing-render-and-domain-state-in-react-dashboards/ https://yaseenkhatib.streamerosai.com/blog/stop-mixing-render-and-domain-state-in-react-dashboards/ Wed, 22 Jul 2026 10:00:00 GMT A pragmatic split for large React 18 dashboards: keep server/domain data out of UI stores, cut re-renders and payloads with a thin serialization adapter. https://yaseenkhatib.streamerosai.com/blog/my-journey-web-developer-to-ai-engineer/ https://yaseenkhatib.streamerosai.com/blog/my-journey-web-developer-to-ai-engineer/ Mon, 20 Jul 2026 10:00:00 GMT Five years, honestly told: an ASP.NET healthcare backend in 2021, full-stack MERN through the ChatGPT shift, nights of embeddings homework, and finally shipping five AI products solo. The journey, without the gloss. https://yaseenkhatib.streamerosai.com/blog/tauri-sqlx-sqlite-migrations-and-wal-for-local-apps/ https://yaseenkhatib.streamerosai.com/blog/tauri-sqlx-sqlite-migrations-and-wal-for-local-apps/ Mon, 20 Jul 2026 10:00:00 GMT Practical guide to embedding SQLite in Tauri with sqlx: file location, compile-time migrations, WAL pragmas, and failure modes for single-user datastores. https://yaseenkhatib.streamerosai.com/blog/zero-network-leakage-in-ci-deny-by-default-egress-harness/ https://yaseenkhatib.streamerosai.com/blog/zero-network-leakage-in-ci-deny-by-default-egress-harness/ Fri, 17 Jul 2026 10:00:00 GMT A practical, cross-platform harness to prove your desktop app makes zero outbound network calls in CI by default—block, log, count, and assert. https://yaseenkhatib.streamerosai.com/blog/unifying-twitch-and-youtube-live-chat-ordered-de-duplicated/ https://yaseenkhatib.streamerosai.com/blog/unifying-twitch-and-youtube-live-chat-ordered-de-duplicated/ Thu, 16 Jul 2026 10:00:00 GMT Build a single, ordered, de-duplicated event stream from Twitch IRC and YouTube Live Chat with Hybrid Logical Clocks, watermarks, and idempotent delivery. https://yaseenkhatib.streamerosai.com/blog/on-device-twitch-irc-in-rust-reconnect-state-machine-backoff/ https://yaseenkhatib.streamerosai.com/blog/on-device-twitch-irc-in-rust-reconnect-state-machine-backoff/ Wed, 15 Jul 2026 10:00:00 GMT Build a fully local Twitch chat ingestor in Rust with a resilient WebSocket reconnect loop, exponential backoff with jitter, and a pragmatic state machine that survives flaky networks. https://yaseenkhatib.streamerosai.com/blog/serverless-local-first-settings-sync-over-lan-with-automerge-mdns/ https://yaseenkhatib.streamerosai.com/blog/serverless-local-first-settings-sync-over-lan-with-automerge-mdns/ Tue, 14 Jul 2026 10:00:00 GMT Replicate user settings across devices on the same LAN without servers by combining Automerge CRDT sync messages with mDNS peer discovery and a tiny TCP transport. https://yaseenkhatib.streamerosai.com/blog/encrypt-tauri-local-storage-at-rest-with-age-os-keychain/ https://yaseenkhatib.streamerosai.com/blog/encrypt-tauri-local-storage-at-rest-with-age-os-keychain/ Mon, 13 Jul 2026 10:00:00 GMT A zero-cloud, cross‑platform pattern to encrypt Tauri local storage at rest using age (X25519) and the OS keychain for seamless key management. https://yaseenkhatib.streamerosai.com/blog/zero-account-auth-device-bound-identity-capability-tokens/ https://yaseenkhatib.streamerosai.com/blog/zero-account-auth-device-bound-identity-capability-tokens/ Sun, 12 Jul 2026 10:00:00 GMT Build secure apps without accounts or an auth server: bind identity to device keys, mint PASETO capability tokens, and enforce DPoP for stateless, least-privilege access. https://yaseenkhatib.streamerosai.com/blog/kill-async-deadlocks-in-tauri-with-tokio-task-dumps-tracing/ https://yaseenkhatib.streamerosai.com/blog/kill-async-deadlocks-in-tauri-with-tokio-task-dumps-tracing/ Sat, 11 Jul 2026 10:00:00 GMT A field guide to diagnosing and terminating async deadlocks in production Tauri apps using Tokio task dumps, tokio-console, and end-to-end tracing spans. https://yaseenkhatib.streamerosai.com/blog/zero-copy-scene-caches-with-memmap2-instant-loads-no-rss-bloat/ https://yaseenkhatib.streamerosai.com/blog/zero-copy-scene-caches-with-memmap2-instant-loads-no-rss-bloat/ Fri, 10 Jul 2026 10:00:00 GMT Use memory-mapped files to load massive scene assets instantly and safely without duplicating data in heap and page cache. Concrete Rust patterns inside. https://yaseenkhatib.streamerosai.com/blog/flamegraphs-over-tauri-ipc-from-rust-event-to-react-paint/ https://yaseenkhatib.streamerosai.com/blog/flamegraphs-over-tauri-ipc-from-rust-event-to-react-paint/ Thu, 09 Jul 2026 10:00:00 GMT A practical, end-to-end method to profile Tauri apps: correlate Rust spans with React paints, align clocks, and read a single cross-IPC flamegraph. https://yaseenkhatib.streamerosai.com/blog/simd-sentiment-scoring-in-rust-via-wasm-workers-no-ui-jank/ https://yaseenkhatib.streamerosai.com/blog/simd-sentiment-scoring-in-rust-via-wasm-workers-no-ui-jank/ Wed, 08 Jul 2026 10:00:00 GMT Build a SIMD-accelerated sentiment scorer in Rust, ship it as WebAssembly, and keep chat analysis off the UI thread without hurting battery or FPS. https://yaseenkhatib.streamerosai.com/blog/shipped-5-products-solo-12-months/ https://yaseenkhatib.streamerosai.com/blog/shipped-5-products-solo-12-months/ Tue, 07 Jul 2026 10:00:00 GMT Five production systems — a Rust desktop cockpit, a workflow engine, a local-first AI finance agent, and two autonomous pipelines — designed, built, and shipped by one engineer. Here's the operating model. https://yaseenkhatib.streamerosai.com/blog/vision-over-syntax-architecture-first/ https://yaseenkhatib.streamerosai.com/blog/vision-over-syntax-architecture-first/ Tue, 07 Jul 2026 10:00:00 GMT Syntax is solved; vision is not. How architecture-first thinking — data contracts, trust boundaries, and deliberate refusals — is the real engineering skill in the AI era, shown through shipped products. https://yaseenkhatib.streamerosai.com/blog/one-architect-claude-mcp-full-squad/ https://yaseenkhatib.streamerosai.com/blog/one-architect-claude-mcp-full-squad/ Tue, 07 Jul 2026 10:00:00 GMT The exact three-layer operating model — architect, Claude Code, MCP-wired systems — that lets one engineer ship like a squad, and the 30-day plan for installing it inside a real company. https://yaseenkhatib.streamerosai.com/blog/ai-finops-playbook-stop-burning-money/ https://yaseenkhatib.streamerosai.com/blog/ai-finops-playbook-stop-burning-money/ Tue, 07 Jul 2026 10:00:00 GMT Most production AI traffic is simple or repetitive, yet it's billed at frontier-model prices. The cache → flash → frontier cascade that fixes the economics, with a live interactive cost simulator. https://yaseenkhatib.streamerosai.com/blog/linkedin-pipeline-job-search-runs-itself/ https://yaseenkhatib.streamerosai.com/blog/linkedin-pipeline-job-search-runs-itself/ Tue, 07 Jul 2026 10:00:00 GMT How I engineered consistency: an autonomous GitHub Actions pipeline that turns real work into scheduled LinkedIn posts, tracks state in Git, costs $0 to run — and what the same pattern automates inside a company. https://yaseenkhatib.streamerosai.com/blog/zero-dollar-content-engine/ https://yaseenkhatib.streamerosai.com/blog/zero-dollar-content-engine/ Tue, 07 Jul 2026 10:00:00 GMT A cron-scheduled pipeline drafts articles with Gemini, writes MDX, commits to Git, and redeploys the static site — no CMS, no server, no database, no bill. The architecture of refusing infrastructure. https://yaseenkhatib.streamerosai.com/blog/sable-ai-agent-never-touches-money/ https://yaseenkhatib.streamerosai.com/blog/sable-ai-agent-never-touches-money/ Tue, 07 Jul 2026 10:00:00 GMT Sable is a local-first AI financial agent: all data in on-device SQLite, no cloud backend, and a Review & Confirm boundary where the model proposes but only a human commits. The trust architecture, explained. https://yaseenkhatib.streamerosai.com/blog/streameros-rust-over-electron/ https://yaseenkhatib.streamerosai.com/blog/streameros-rust-over-electron/ Tue, 07 Jul 2026 10:00:00 GMT streamerOS runs on the most contested consumer PC there is — game, encoder, OBS, chat. Why a Rust + Tauri core, on-device chat ingestion, and a MessagePack IPC bridge were the product decision, not a preference. https://yaseenkhatib.streamerosai.com/blog/the-94-percent-decision-integratex/ https://yaseenkhatib.streamerosai.com/blog/the-94-percent-decision-integratex/ Tue, 07 Jul 2026 10:00:00 GMT Persisting React Flow's UI objects nearly sank the product. Drawing a serialization boundary between view and domain cut payloads 94% — the reasoning behind the call, and how to audit your own product for it. https://yaseenkhatib.streamerosai.com/blog/hire-my-head-not-my-hands/ https://yaseenkhatib.streamerosai.com/blog/hire-my-head-not-my-hands/ Tue, 07 Jul 2026 10:00:00 GMT AI made hands abundant; heads stayed scarce. The closing argument of the Founder's Log series — the architectural judgment pattern across five shipped products, addressed to the person deciding whether to interview me. https://yaseenkhatib.streamerosai.com/blog/shrink-streameros-rust-binaries-optz-fat-lto-panicabort/ https://yaseenkhatib.streamerosai.com/blog/shrink-streameros-rust-binaries-optz-fat-lto-panicabort/ Tue, 07 Jul 2026 10:00:00 GMT A practical, measured look at how opt-level=z, fat LTO, and panic=abort shrink Rust binaries for production systems like streamerOS—and the trade-offs. https://yaseenkhatib.streamerosai.com/blog/rust-structured-concurrency-cap-media-decoders-w-tokio-joinset/ https://yaseenkhatib.streamerosai.com/blog/rust-structured-concurrency-cap-media-decoders-w-tokio-joinset/ Mon, 06 Jul 2026 10:00:00 GMT Use tokio JoinSet and semaphores to bound parallel media decoders, enforce backpressure, and build cancellation-safe ffmpeg workers with structured concurrency. https://yaseenkhatib.streamerosai.com/blog/pinning-a-18-idle-cpu-evented-vs-polling-in-tauri-tray-apps/ https://yaseenkhatib.streamerosai.com/blog/pinning-a-18-idle-cpu-evented-vs-polling-in-tauri-tray-apps/ Sun, 05 Jul 2026 10:00:00 GMT A ruthless, code-first look at hitting a ~1.8% idle CPU budget in long‑running Tauri tray apps by replacing polling with event‑driven plumbing. https://yaseenkhatib.streamerosai.com/blog/crossbeam-spsc-ring-buffers-for-60-fps-rust-audio-meters/ https://yaseenkhatib.streamerosai.com/blog/crossbeam-spsc-ring-buffers-for-60-fps-rust-audio-meters/ Sat, 04 Jul 2026 10:00:00 GMT Build a zero-allocation, lock-free SPSC ring buffer with crossbeam to stream audio metering data to a 60 FPS UI in Rust without contention. https://yaseenkhatib.streamerosai.com/blog/a-reproducible-ram-regression-workflow-in-rust-with-dhat-heaptrack/ https://yaseenkhatib.streamerosai.com/blog/a-reproducible-ram-regression-workflow-in-rust-with-dhat-heaptrack/ Fri, 03 Jul 2026 10:00:00 GMT A practical, deterministic workflow to catch and bisect memory regressions in a Rust media pipeline using dhat for budgets and heaptrack for call stacks. https://yaseenkhatib.streamerosai.com/blog/halving-tauri-v2-ipc-batch-events-rmp-serde-messagepack/ https://yaseenkhatib.streamerosai.com/blog/halving-tauri-v2-ipc-batch-events-rmp-serde-messagepack/ Thu, 02 Jul 2026 10:00:00 GMT Cut Tauri v2 Rust↔WebView IPC overhead by batching events and serializing with rmp-serde MessagePack, with concrete code for both sides. https://yaseenkhatib.streamerosai.com/blog/serdejson-to-simd-json-in-streameros-ipc-hot-path-deserialization/ https://yaseenkhatib.streamerosai.com/blog/serdejson-to-simd-json-in-streameros-ipc-hot-path-deserialization/ Wed, 01 Jul 2026 10:00:00 GMT We replaced serde_json with simd-json in streamerOS’s IPC layer and benchmarked the deserialize hot path, showing where SIMD wins and where it doesn’t. https://yaseenkhatib.streamerosai.com/blog/tauri-rust-backpressure-bounded-vs-unbounded-channels-for-chat-floods/ https://yaseenkhatib.streamerosai.com/blog/tauri-rust-backpressure-bounded-vs-unbounded-channels-for-chat-floods/ Tue, 30 Jun 2026 10:00:00 GMT Design a Tauri Rust core that survives chat floods without memory blowups using bounded channels, drop-oldest semantics, and time-based batching. https://yaseenkhatib.streamerosai.com/blog/zero-copy-twitch-irc-parsing-in-rust-with-bytes-nom-at-5ks/ https://yaseenkhatib.streamerosai.com/blog/zero-copy-twitch-irc-parsing-in-rust-with-bytes-nom-at-5ks/ Mon, 29 Jun 2026 10:00:00 GMT Build a zero-copy Twitch IRC parser in Rust using bytes::Bytes and nom to sustain 5,000+ messages/sec without heap churn or unnecessary allocations. https://yaseenkhatib.streamerosai.com/blog/rust-arena-allocation-to-keep-streameros-under-152-mb-for-12h/ https://yaseenkhatib.streamerosai.com/blog/rust-arena-allocation-to-keep-streameros-under-152-mb-for-12h/ Sun, 28 Jun 2026 10:00:00 GMT Practical, code-first arena allocation patterns in Rust that kept our live-streaming OS under 152 MB RAM for 12-hour broadcasts with zero leaks. https://yaseenkhatib.streamerosai.com/blog/tauri-v2-tokio-console-18-cpu-with-4-concurrent-streams/ https://yaseenkhatib.streamerosai.com/blog/tauri-v2-tokio-console-18-cpu-with-4-concurrent-streams/ Sat, 27 Jun 2026 10:00:00 GMT A field-tested workflow to profile and tune a Tauri v2 Rust backend using tokio-console, slashing wake storms and sustaining 1.8% CPU across 4 streams. https://yaseenkhatib.streamerosai.com/blog/agentic-workflows-vs-copilots/ https://yaseenkhatib.streamerosai.com/blog/agentic-workflows-vs-copilots/ Tue, 16 Jun 2026 10:00:00 GMT A copilot completes your line; an agent executes your task. Why the difference is categorical — not incremental — and why it separates a 10% speedup from a 10x one. https://yaseenkhatib.streamerosai.com/blog/custom-serialization-adapters/ https://yaseenkhatib.streamerosai.com/blog/custom-serialization-adapters/ Mon, 15 Jun 2026 10:00:00 GMT Rich UI objects make terrible database records. The Serialization Adapter pattern that separates render model from transport record — and cut IntegrateX payloads by 94%. https://yaseenkhatib.streamerosai.com/blog/vector-embeddings-in-production/ https://yaseenkhatib.streamerosai.com/blog/vector-embeddings-in-production/ Sun, 14 Jun 2026 10:00:00 GMT Demo vector search is one query; production RAG is a pipeline. Chunking strategy, metadata-filtered hybrid search, and index freshness — the architecture behind the Police RAG system. https://yaseenkhatib.streamerosai.com/blog/advanced-redis-caching-strategies/ https://yaseenkhatib.streamerosai.com/blog/advanced-redis-caching-strategies/ Sat, 13 Jun 2026 10:00:00 GMT On a busy portal I learned Redis caching strategies live or die on details: one interceptor boundary, cache-aside vs write-through, TTL jitter, stampede guards. https://yaseenkhatib.streamerosai.com/blog/websocket-telemetry-at-scale/ https://yaseenkhatib.streamerosai.com/blog/websocket-telemetry-at-scale/ Fri, 12 Jun 2026 10:00:00 GMT A single WebSocket server is a weekend project; streaming to thousands across instances is architecture. Redis pub/sub backplanes, room-scoped subscriptions, and source-side coalescing. https://yaseenkhatib.streamerosai.com/blog/optimizing-mongodb-aggregation/ https://yaseenkhatib.streamerosai.com/blog/optimizing-mongodb-aggregation/ Thu, 11 Jun 2026 10:00:00 GMT Profiling a clinical workflow API taught me MongoDB aggregation lives or dies on stage order: $match first on indexes, $lookup treated as the join it is, then read explain. https://yaseenkhatib.streamerosai.com/blog/mastering-claude-architecture-context-windows-output-limits/ https://yaseenkhatib.streamerosai.com/blog/mastering-claude-architecture-context-windows-output-limits/ Wed, 10 Jun 2026 10:00:00 GMT The Claude context window is one token budget shared by prompt, tools, thinking, and reply. I count tokens and guard it in code so a reply never truncates. https://yaseenkhatib.streamerosai.com/blog/role-based-access-control-patterns/ https://yaseenkhatib.streamerosai.com/blog/role-based-access-control-patterns/ Wed, 10 Jun 2026 10:00:00 GMT Authorization bugs don't crash — they let the wrong person succeed. Enforcing RBAC at the middleware layer with JWT claims, fine-grained permissions, and deny-by-default. https://yaseenkhatib.streamerosai.com/blog/xml-tag-structural-prompting-deterministic-shell/ https://yaseenkhatib.streamerosai.com/blog/xml-tag-structural-prompting-deterministic-shell/ Tue, 09 Jun 2026 10:00:00 GMT Flat prompts make Claude guess which text is a command, context, or untrusted input. Use XML tags to anchor attention, quarantine injection, and make output parseable. https://yaseenkhatib.streamerosai.com/blog/claude-code-context-hygiene-clear-compact/ https://yaseenkhatib.streamerosai.com/blog/claude-code-context-hygiene-clear-compact/ Tue, 09 Jun 2026 10:00:00 GMT Claude re-sends the whole conversation every turn, so a messy context window is a recurring bill. How /clear and /compact cut token spend by ~85%. https://yaseenkhatib.streamerosai.com/blog/redux-toolkit-architectures/ https://yaseenkhatib.streamerosai.com/blog/redux-toolkit-architectures/ Tue, 09 Jun 2026 10:00:00 GMT RTK made Redux's boilerplate reputation obsolete. Structuring feature slices, normalizing with entity adapters, offloading server state to RTK Query — and when not to reach for it. https://yaseenkhatib.streamerosai.com/blog/json-structured-outputs-type-safe-zod/ https://yaseenkhatib.streamerosai.com/blog/json-structured-outputs-type-safe-zod/ Mon, 08 Jun 2026 10:00:00 GMT Parsing Claude's prose with regex breaks pipelines. Force type-safe JSON with tool use, then validate it at the boundary with a Zod contract that doubles as your type. https://yaseenkhatib.streamerosai.com/blog/ai-native-portfolio-landing-lead-roles/ https://yaseenkhatib.streamerosai.com/blog/ai-native-portfolio-landing-lead-roles/ Mon, 08 Jun 2026 10:00:00 GMT A portfolio that lists 'used ChatGPT' reads junior. One that demonstrates systems architecture — RAG, agents, guardrails, latency budgets — reads like the lead they're trying to hire. Here's how to build the second one. https://yaseenkhatib.streamerosai.com/blog/zero-hallucination-rag-grounding-contract/ https://yaseenkhatib.streamerosai.com/blog/zero-hallucination-rag-grounding-contract/ Mon, 08 Jun 2026 10:00:00 GMT Retrieval never stopped hallucination on my streamerOS agent — a grounding contract did: a retrieval score floor, a strict prompt, and required attribution.