Connection Pool Sizing: The Math That Says Fewer, Not More
Every team seems to arrive at the same configuration at some point: the database feels slow, someone searches for a
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Tag: PostgreSQL
Beyond OFFSET: Keyset Pagination in PostgreSQL That Actually Scales
Offset pagination is the first thing everyone learns and the first thing that falls over in production. The product manager
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Zero-Downtime PostgreSQL Migrations: Locks, Rewrites, and Expand-and-Contract
Every schema migration is easy the first time, when the table is empty and the only user is your test
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Reading EXPLAIN Like a Planner: Debugging Slow Queries in PostgreSQL
# POST 2: Reading EXPLAIN A query that ran in 20 milliseconds yesterday takes 40 seconds today. Nothing in the
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The Transactional Outbox Pattern in Go: Reliable Events Without Dual Writes
# POST 1: Transactional Outbox (Slot 10 backend) You update a row in your database, then publish an event to
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PgBouncer 1.26.0: Pre-Auth CVEs, the search_path Fix, and What Changes for Pool Sizing
PgBouncer has quietly become mandatory infrastructure for PostgreSQL at scale. If you run more than a few hundred client connections
PostgreSQL Isolation Levels: What Repeatable Read Actually Guarantees
Every PostgreSQL developer knows the four isolation levels from the SQL standard: Read Uncommitted, Read Committed, Repeatable Read, Serializable. Fewer
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Zero-Downtime Schema Migrations in PostgreSQL: Expand-Contract, Lock Timeouts, and Safe ALTER TABLE
PostgreSQL takes an ACCESS EXCLUSIVE lock for most ALTER TABLE operations. That lock conflicts with everything — reads, writes, even
PostgreSQL Connection Pooling: Session vs Transaction Mode, PgBouncer, and How to Size It
Every PostgreSQL backend process is a full Unix process with its own megabytes of memory. That design choice buys you
MVCC and VACUUM in PostgreSQL: Dead Tuples, Autovacuum Tuning, and What PG18 Changed
Every UPDATE in PostgreSQL is secretly an INSERT-plus-a-tombstone. The old row version stays on disk, fully readable to any transaction
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