postgresdba.hashnode.devHow to Find and Fix Missing Indexes in PostgreSQLHow to Find and Fix Missing Indexes in PostgreSQL A sequential scan on a 100-row table takes microseconds. A sequential scan on a 10-million-row table takes hundreds of milliseconds. The SQL is identical. The schema is identical. The only difference ...17h ago·5 min read
postgresdba.hashnode.devDiagnosing and Resolving Lock Contention in PostgreSQLPostgreSQL Lock Contention: The 10-Second Cascade That Takes Down Your App A single forgotten COMMIT can queue 50 transactions and bring your application to its knees. Lock contention in PostgreSQL is uniquely dangerous because it escalates exponenti...1d ago·3 min read
postgresdba.hashnode.devUnderstanding and Fixing Table Bloat in PostgreSQLUnderstanding and Fixing Table Bloat in PostgreSQL Every row you update in PostgreSQL leaves a corpse behind. Not metaphorically -- literally. PostgreSQL's MVCC architecture means that UPDATE doesn't modify a row in place. It creates a brand new vers...1d ago·5 min read
postgresdba.hashnode.devPostgreSQL Autovacuum Tuning: A Practical GuidePostgreSQL Autovacuum Tuning: A Practical Guide Here's a question that separates experienced PostgreSQL operators from everyone else: how many dead tuples does your busiest table accumulate before autovacuum kicks in? If you're running defaults on a ...1d ago·6 min read
postgresdba.hashnode.devPostgreSQL Autovacuum Tuning: A Practical GuidePostgreSQL Autovacuum Tuning: A Practical Guide Here's a question that separates experienced PostgreSQL operators from everyone else: how many dead tuples does your busiest table accumulate before autovacuum kicks in? If you're running defaults on a ...1d ago·6 min read
