Tag
6 posts
1 post
A centralized settings module as the last line of defense: boot gates that collect every missing variable, fallbacks that log at ERROR instead of degrading quietly, and why point-of-use beats boot-time for some checks.
1 post
Inside the notification scheduler: a ten-second tick over five sweeps, five-minute compare-and-swap leases, a recurrence engine with strict and non-strict personalities, and retry accounting that never double-charges.
3 posts
Voice agents feel synchronous but live on a mess of tool calls, reconnects, and long-running jobs. A background job manager with dedup, bounded retries, a dead-letter queue, and a sideband control channel — plus a discovery system for assumptions you cannot verify.
Third-party webhooks expire, get orphaned by restarts, and miss events. A reconcile-loop design that converges desired vs. live state, plus deduplication by join URL and latches that remember deliberate exits.
Background jobs that run for minutes, pause for human answers, and survive restarts need more than a status column. A design for pausable, resumable, auditable background work: explicit states, a question channel, generation gates, and append-only logs.
1 post
How to run a distributed scheduler on a single table: advisory-lock leader election, SKIP LOCKED work claiming, semaphore-style concurrency caps, and heartbeat reaping.