Why PostgreSQL Needs an External Connection Pooler
Each active PostgreSQL connection forks a dedicated backend operating system process consuming 10–20MB of RAM. When serverless functions or container clusters spawn 2,000 concurrent client connections, the database crashes due to memory exhaustion and CPU context-switching thrashing. pgBouncer in Transaction Pooling mode multiplexes thousands of incoming client requests into a small pool of 50–100 persistent server connections.
Authored by Saizul Amin for production PostgreSQL administrators and backend engineers.
Production pgbouncer.ini Configuration
[databases]
production_db = host=127.0.0.1 port=5432 dbname=production_db pool_size=50
[pgbouncer]
listen_addr = 0.0.0.0
listen_port = 6432
auth_type = scram-sha-256
auth_file = /etc/pgbouncer/userlist.txt
# Transaction pooling mode: connection returned immediately after COMMIT
pool_mode = transaction
max_client_conn = 10000
default_pool_size = 40
min_pool_size = 10
reserve_pool_size = 5
reserve_pool_timeout = 5
Saizul Amin is a digital growth strategist and SEO consultant specialising in search engine optimisation, web development, AI-powered automation, and online income systems. With 8 years of hands-on experience helping businesses and individual creators grow their online presence, Saizul combines technical expertise with practical, results-driven strategy.
Experience & Background
Saizul started his digital career in 2017, initially working with Bioscope Limited to build and optimise websites for organic search traffic. Over the years, he has worked across industries including DGHS, NAVANA, UNICampus, UNIPathways, UniqueMark, developing a deep understanding of what it takes to rank, convert, and grow sustainably online.
His work spans the full digital stack — from technical SEO audits and content strategy to WordPress development, marketing automation, and AI tool integration for small businesses and startups.
What He Covers on This Blog
Every article on SaizulAmin.com is written from direct experience. Saizul does not publish theoretical content — every guide, tool recommendation, and strategy shared here has been tested and applied in real projects. Topics include:
- Search engine optimisation (on-page, technical, and content SEO)
- Digital marketing strategy and growth systems
- AI tools and automation for business productivity
- Web development, WordPress, and website building
- Making money online through freelancing and affiliate marketing
Why Trust This Content
All recommendations on this site reflect tools and strategies Saizul actively uses or has personally evaluated. Where affiliate relationships exist, they are clearly disclosed. Content is regularly reviewed and updated to reflect current best practices and algorithm changes.