PostgreSQL's `restore_command` asks for WAL segments one at a time until the command fails—and that failure marks the archive's end, whether it's real or not. (I consult on PostgreSQL through PGX Inc..)

When a PostgreSQL backend crashes, the postmaster can restart itself automatically or exit and wait for external intervention. (I consult on PostgreSQL through PGX Inc..)

PostgreSQL 16's `reserved_connections` reserves slots for your monitoring and backup roles when the application exhausts the pool. (I consult on PostgreSQL through PGX Inc..)

Protect your disk from orphaned temporary files after a backend crash. (I consult on PostgreSQL through PGX Inc..)

PostgreSQL 15's `recursive_worktable_factor` helps you fix slow recursive CTEs by tuning a single estimate. (I consult on PostgreSQL through PGX Inc..)

Restore to the moment before the disaster using eight parameters that answer where replay stops, which timeline to follow, and what to do when you get there. (I consult on PostgreSQL through PGX Inc..)

Standby lagging on network storage? `recovery_prefetch` lets WAL replay ask the kernel to read pages before it needs them, turning seventeen minutes of… (I consult on PostgreSQL through PGX Inc..)

recovery_min_apply_delay makes a standby late on purpose. For the length of the delay there is a running, queryable copy of your database on which the DELETE without a WHERE clause has not...

A hook that fires exactly once at promotion or restore completion—but the server is neither ready nor recovering while your command runs. (I consult on PostgreSQL through PGX Inc..)

After a crash, PostgreSQL syncs every file in your data directory before replaying any WAL—and on large clusters, this can consume minutes. (I consult on PostgreSQL through PGX Inc..)

The planner charges `random_page_cost` per index page based on how uncorrelated the index is—but the name lies. (I consult on PostgreSQL through PGX Inc..)

Dumping across major versions? A reserved keyword can silently break constraints and policies. (I consult on PostgreSQL through PGX Inc..)

Configure a replication slot name on your standby and the upstream keeps WAL forever—until the slot itself fills your disk or the standby dies holding an old… (I consult on PostgreSQL through PGX Inc..)

`primary_conninfo` tells a standby where to stream WAL from—but only after the archive and pg_wal run dry. (I consult on PostgreSQL through PGX Inc..)

Debugging PostgreSQL connections requires stopping a backend before it does anything interesting. (I consult on PostgreSQL through PGX Inc..)

The `port` parameter does double duty: it names the TCP socket and the Unix socket file too. (I consult on PostgreSQL through PGX Inc..)

Override PostgreSQL's prepared statement plan choice when its cost estimates go wrong on skewed data. (I consult on PostgreSQL through PGX Inc..)

What `password_encryption` actually controls: how PostgreSQL hashes new passwords when you hand it clear text. (I consult on PostgreSQL through PGX Inc..)

Whether your query's leader process joins the work or just supervises depends on this boolean, and the performance question it settles is subtle. (I consult on PostgreSQL through PGX Inc..)