JWT Security Pitfalls: Algorithm Confusion, Header Injection, and the Claims Everyone Forgets to Check
JWTs are everywhere because they solve an ugly problem: how does a stateless service know who’s calling without a database
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PostgreSQL Connection Pooling: Session vs Transaction Mode, PgBouncer, and How to Size It
Every PostgreSQL backend process is a full Unix process with its own megabytes of memory. That design choice buys you
PagedAttention and the KV Cache: How OS Paging Explains Modern LLM Serving
When an LLM serves a 2,000-token response to a prompt of 10,000 tokens, it does something that looks absurd from
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Prometheus Metric Cardinality: How Explosions Happen and the Five Controls That Stop Them
Every Prometheus failure I’ve seen in production started the same way: someone added a label. A user ID on a
RAG Chunking Strategies in 2026: What the Benchmarks Actually Show
Every RAG system has two halves: a retriever that decides which text the model sees, and a generator that answers
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Structured Logging in Go: slog, OpenTelemetry, and the Fields That Matter in Production
At 02:14 on a Sunday, an alert fires: payment success rate dropped four percent. You run kubectl logs across a
gRPC Server Reflection in Production: Gate It, and Use Health Checks Instead
Here is a debugging story that repeats across every gRPC team. A developer runs grpcurl -plaintext localhost:50051 list against a
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LLM Routing and Cascading: Send Every Query to the Cheapest Model That Can Handle It
If you run a large language model behind a product, you have probably internalized an uncomfortable trade-off. The big frontier
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MVCC and VACUUM in PostgreSQL: Dead Tuples, Autovacuum Tuning, and What PG18 Changed
Every UPDATE in PostgreSQL is secretly an INSERT-plus-a-tombstone. The old row version stays on disk, fully readable to any transaction
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LLM Quantization Explained: GPTQ, AWQ, GGUF, and When Each One Wins
Serving a 7B model in fp16 takes roughly 14 GB of VRAM. A 70B model takes around 140 GB —
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