Database VPS
2026-10-05
By Dmitri Volkov
How to Tune PostgreSQL 17 for 100K Transactions/Sec on Linux VPS
Configuring shared_buffers, work_mem, effective_io_concurrency, and write-ahead log (WAL) on dedicated Gen4 NVMe arrays for mission-critical relational data.
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PostgreSQL Docs ↗
Memory & I/O Tuning
Default PostgreSQL settings are designed to run on modest 512MB RAM machines. On a 4GB or 8GB Gen4 NVMe VPS, configuring shared_buffers = 2GB and effective_cache_size = 6GB delivers up to 100,000 transactions/sec without disk I/O bottlenecks.
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