Performance on Vonng

PostgreSQL's Impressive Scalability

rh@vonng.com (Ruohang Feng) — Sat, 13 Jan 2024 00:00:00 +0000

This article describes how Cloudflare scaled to support 55 million requests per second using 15 PostgreSQL clusters, and PostgreSQL’s scalability performance.

PostgreSQL Macro Query Optimization with pg_stat_statements

rh@vonng.com (Ruohang Feng) — Thu, 26 Oct 2023 00:00:00 +0000

Query optimization is one of the core responsibilities of DBAs. This article introduces how to use metrics provided by pg_stat_statements for macro-level PostgreSQL query optimization.

How Powerful is PostgreSQL Really?

rh@vonng.com (Ruohang Feng) — Mon, 22 Aug 2022 00:00:00 +0000

Let performance data speak: Why PostgreSQL is the world’s most advanced open-source relational database, aka the world’s most successful database. MySQL vs PostgreSQL performance showdown and distributed database reality check.

A Methodology for Diagnosing PostgreSQL Slow Queries

rh@vonng.com (Ruohang Feng) — Tue, 23 Feb 2021 00:00:00 +0000

Slow queries are the sworn enemy of OLTP databases. Here’s how to identify, analyze, and fix them using metrics (Pigsty dashboards), pg_stat_statements, and logs.

Testing Disk Performance with FIO

rh@vonng.com (Ruohang Feng) — Tue, 06 Feb 2018 00:00:00 +0000

FIO is a convenient tool for testing disk I/O performance

Using sysbench to Test PostgreSQL Performance

rh@vonng.com (Ruohang Feng) — Tue, 06 Feb 2018 00:00:00 +0000

Although PostgreSQL provides pgbench, sometimes you need sysbench to outperform MySQL.