Deep-dive guides on AI agents, agent orchestration, MCP, and developer tooling.
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LIMIT/OFFSET pagination silently duplicates and skips rows the moment writes happen concurrently, and gets slower the deeper a client pages. Here is why, and how keyset (cursor) pagination avoids both problems.
A webhook endpoint is just a public URL that runs code when it receives a POST — which means anyone who finds it can send you fake events unless you verify the signature correctly, including the two checks most implementations skip.
JSON Schema looks like static typing for JSON, but its composition keywords follow evaluation rules that trip up most people writing their first real-world schema — here's the mental model that actually holds up.
A dropped connection makes a client retry a POST that already succeeded — without an idempotency key, that retry becomes a duplicate charge, not a safety net. Here's how the pattern actually works and where naive implementations fail.
A JSON array requires seeing the closing bracket before any of it is valid — which is exactly what breaks when you stream millions of records. Newline-delimited JSON fixes that by making every line a complete, independent document.