Tech Talk

Every SaaS product eventually ships a button that says Import. It looks like a small feature: accept a CSV, loop over rows, write to the database. In production it is one of the riskiest wri...

Most teams treat a schema change as one event: write a migration file, run it in the deploy pipeline, and move on. In a multi-tenant SaaS product, that single event is really two separate pr...

Most engineering teams build the receiving side of webhooks first, because their own integrations force them to. Then a customer asks for webhooks from your product, and a two-day task appea...

Incremental sync from a third-party API is safe only if three things hold. The cursor advances only after the data it covers is durably applied. Deletes and invalid tokens are first-class st...

A lease decides which worker should be doing a job. A fencing token decides whose write the system will accept. Teams that rely on the lease alone eventually ship a duplicate refund, a doubl...

Redriving a dead-letter queue (DLQ) is a production mutation, not a cleanup chore. A message in a DLQ means the broker stopped delivering it. It does not tell you whether the work never ran...

Most teams add human approval to an AI agent by putting a confirmation button in front of a tool call. That solves the visible problem: a person said yes. It leaves the hard problems open. W...

To delete a person's data reliably in a distributed system, treat each deletion request as a durable, tenant-scoped operation. Fan it out to every system that holds personal data. Mark each...