Archive
30 posts published
Rate limit headers should describe the next safe attempt
A 429 response is more useful when it tells the caller how recovery actually works, not only that a threshold was crossed
How long should an idempotency key live
The retention window is part of the contract, because replay safety ends the moment the original decision record disappears
A manual replay needs the reason that justified it
An operator-triggered replay is safer when the system preserves why the original uncertainty was judged replayable at all
A 202 response needs a receipt trail
Accepted is a queueing answer, not proof that the later work finished, so the system still needs a trackable chain of receipts after the first response
When the error message lies about the failure
A production incident gets slower and riskier when the recorded failure names the wrong boundary
Receipts should outlive the retry budget
A delivery record stays useful only if the acknowledgement evidence survives long enough for replay, support, and audit decisions
Timeouts should keep their doubt
A delivery timeout should preserve uncertainty clearly enough that the next operator does not confuse missing evidence with a confirmed failure
Dead letter queues should keep the reason
A failed delivery is more reviewable when the queue preserves why the handoff stopped, not only the payload that did not move
Replay starts with the original request ID
A safe replay path keeps the first delivery visible, refuses blind retries, and records the second attempt as its own event
Webhook retries need receipts
Reliable delivery starts by recording what the receiver accepted, not by sending the same payload louder
Idempotency comes before retries
Reliable dispatch systems make repeated delivery safe before they make repeated delivery fast
Why AI agents fail in production: state drift, not prompt drift
A practical state-convergence playbook for project-scoped agent systems
Security friction needs a job
Security improvements that stick are the ones that reduce cognitive load for normal users while narrowing attack surface
Credential leak response needs a prepared path
Credential leak response must be pre-designed. Improvisation guarantees longer exposure windows.
Edge reliability starts before application code
Why most production outages in small API platforms happen at the edge layer, not in business logic
Clever deployment pipelines hide the hard parts
Reliable delivery pipelines optimize for repeatability and recoverability, not cleverness
Investigation starts with the records you keep
Audit and observability are data models first, dashboards second
MCP tools need API-grade contracts
Why MCP servers should be thin, reliable protocol adapters - not application logic hosts
The promise an SDK makes to every language
SDK quality is contract fidelity plus ergonomic defaults - not HTTP calls with types
Contract drift is an API bug
Why contract discipline is the fastest path to scalable integrations and lower support overhead
Run pgvector like production database infrastructure
What it actually takes to run Postgres with pgvector reliably in production
Duplicate storage quietly becomes infrastructure debt
Content-addressable deduplication and integrity checks for API platforms using object storage
Start rate limits where the system can explain them
Build simple, visible, enforceable limits before you build complex ones
Background jobs need a cleanup contract
Why lifecycle integrity in stateful systems depends on explicit, observable maintenance jobs
Retrieval output still needs a context contract
Search output is not prompt-ready context. Assembly is a first-class subsystem.
Retrieval works when vector search has backup
Why reliable retrieval needs layered fallback chains, not vector-only optimism
The cheapest breach is the one that never happened
How to build data loss prevention into your API's write path before secrets reach your database
Schema discipline decides retrieval reliability
Schema quality determines long-term correctness more than any algorithm choice
Design API keys as operating credentials
A production-grade model for key format, storage, scope, and rotation
Authorization is where multitenant systems earn trust
Why multi-tenant systems fail at authorization boundaries, and how to fix it