𝗣𝗼𝘀𝘁𝗴𝗿𝗲𝗦𝗤𝗟 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝗧𝘂𝗻𝗶𝗻𝗴

𝗣𝗼𝘀𝘁𝗴𝗿𝗲𝗦𝗤𝗟 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝗧𝘂𝗻𝗶𝗻𝗴

PostgreSQL works well at the start. Your data grows. You must tune it. Tuning is a system. Measure. Identify. Optimize. Guessing is not tuning.

Indexes speed up reads. Use them for WHERE, JOIN, and ORDER BY. B-tree is the standard. Use EXPLAIN ANALYZE to verify your work. Too many indexes slow down writes. Be strategic.

Read your query plans. Look for sequential scans on large tables. Avoid the N+1 problem. ORMs hide bad SQL. Check the actual code.

Use connection pooling. PgBouncer keeps your system stable. Set statement timeouts. Stop bad queries from killing your database.

Configure autovacuum. It cleans dead data. Set shared_buffers to 25% of your RAM. Track performance with pg_stat_statements.

Test your backups. A backup you never restore is only a hope. Use point-in-time recovery to fix mistakes.

Your action plan:

• This week: Check slow logs. Fix the top three queries.
• This month: Set up connection pooling.
• This quarter: Run a recovery drill.

Source: https://dev.to/therizwansaleem/postgresql-performance-tuning-indexes-queries-and-configuration-2l7o Optional learning community: https://t.me/GyaanSetuAi