Engineering researcher. APIs, databases, infrastructure, systems design.
Most webhook products treat suspension as a single state, but the cause and intent behind a suspension changes what the customer should be able to do about it. The three-mode distinction prevents customer support tickets and audit confusion.
Stone-grinding flour mills operated continuously across multiple civilizations from roughly 1000 BCE to the 1880s, with form essentially unchanged for three millennia. Within twenty years of the Hungarian roller mill design, stone milling was effectively extinct in industrial economies.
Replication slots are one of the most operationally dangerous Postgres features because their failure mode is silent disk fill. The view exposes the data to monitor, but the alerts require different thresholds for streaming and logical slots.
Customers accumulate webhook subscriptions over time, and at some point have more than they can mentally track. Tags are the smallest mechanism that lets customers organize their integrations, and most webhook products implement them wrong.
The default EXPLAIN output is built for humans reading one plan at a time. The JSON format is built for tools, scripts, and dashboards that need to read many plans and compare them programmatically.
James Dewar invented the vacuum flask in 1892 to store liquid gases for cryogenic research. Within 15 years it had become the Thermos, a household object. The transition from cryogenic apparatus to picnic accessory is one of the strangest commercial trajectories in 20th-century technology.
Foreign key checks normally run at the statement level. Deferred constraints let them run at commit instead, which is the right tool for circular references and bulk imports that produce intermediate states the canonical immediate-check semantics reject.
Customers regularly need to stop webhook delivery temporarily without losing events: deploys, planned maintenance, receiver upgrades. The pause-and-resume primitive is one of the smallest, highest-leverage features in a webhook product, and most providers ship it wrong.
WAL archiving is the foundation of point-in-time recovery, and the most common failure mode is silent: archive_command fails, pg_wal fills up, and nobody notices until the cluster refuses writes. pg_stat_archiver catches the failure before it compounds.
Webhook providers cannot guarantee exactly-once delivery, so they push idempotency onto the receiver. The pattern is well-known to providers and consistently underdocumented for receivers. What receivers actually need to do, and the failure modes when they skip it.
The zipper is one of the most familiar mechanical objects in daily life and one of the least obvious in invention history. The path from Howe's 1851 patent through Judson's 1893 Clasp Locker to Sundback's 1913 interlocking teeth took six decades and three patentable inventions.
Most teams configure TLS on their Postgres connection and then never look at it again. pg_stat_ssl is the per-connection view that tells you which connections are actually encrypted and which TLS version and cipher they negotiated. The diagnostic queries and the configuration knobs that matter.