DevProxy is an HTTP/1.1 forward and reverse proxy built from raw sockets up. It runs a single-threaded epoll-based event loop per core, keeps upstream connections alive in a slab-allocated pool, and reloads configuration on SIGHUP without dropping in-flight requests. Structured access logs ship as newline-delimited JSON. Built to understand exactly what nginx does for me — and what it costs.

BNS RAG ingests biomedical literature, chunks it with section-aware splitting, embeds passages into ChromaDB, and serves grounded answers through a locally hosted Ollama model. A reranking stage filters retrieved passages before generation, and an evaluation harness scores every answer for citation faithfulness. The reranker cut hallucinated references by roughly 60% in testing.

A distributed key-value cache where nodes discover each other over a gossip layer and keys are placed via consistent hashing with virtual nodes, so adding a shard remaps only its slice of the ring. Supports per-key TTLs, LRU eviction under memory pressure, and a deliberately plain text protocol for debuggability. The interesting failures were never in the happy path — they were in what happens when a node disappears mid-rebalance.

A load balancer that speaks both raw TCP and HTTP, with pluggable scheduling strategies: round-robin, weighted round-robin, and least-connections. Active health checks eject unhealthy upstreams and readmit them after consecutive successes, with exponential backoff between probes. Built as the natural sequel to DevProxy — once you can move one request, the next question is how to move a million of them fairly.