PostgreSQL NOTIFY: Signals Are Not a Durable Queue
Use PostgreSQL NOTIFY with durable work records, transaction-aware delivery, listener startup checks, safe payloads, and reconnect reconciliation.
Hackbitez journal
Category: Software
PostgreSQL Generated Columns: A Derived-Value Contract
Design PostgreSQL generated columns with supported expressions, version checks, null semantics, migration review, privileges, and verified query behavior.
Python LRU Cache: Reuse Without Stale Authority
Use Python LRU cache with stable keys, bounded size, immutable results, freshness rules, concurrency tests, and permission-aware application boundaries.
Git Revert: Reverse a Change Without Erasing History
Use Git revert with reviewed commit scope, merge-parent decisions, careful conflicts, deployment checks, and explicit limits on data and secret recovery.
Kubernetes Services: Selectors, Ports and Exposure
Review Kubernetes Services through selectors, target ports, service types, endpoint readiness, network paths, and authorized exposure tests.
Kubernetes EndpointSlices: Backend State in Context
Inspect Kubernetes EndpointSlices with service association, address and port checks, readiness and termination, controller ownership, and traffic tests.
Kubernetes Persistent Volumes: Claims and Recovery
Plan Kubernetes persistent volumes with claim binding, storage-class behavior, access-mode limits, reclaim policies, backups, and verified restoration.
CloudWatch Logs Retention: Evidence Has a Lifetime
Configure CloudWatch Logs retention with evidence requirements, existing-data impact, delayed deletion, approved archives, access controls, and gap alerts.
Python Requests Timeouts: Bound Waiting, Not Just Calls
Use Python Requests timeouts with explicit connect and read settings, whole-task deadlines, bounded retries, safe streaming, and tested failure outcomes.
HTTP Range Requests: Resume Without Mixing Versions
Handle HTTP range requests with correct status checks, representation validators, authorized partial access, bounded multi-range work, and integrity tests.