PostgreSQL on PIGSTY

Happy 30th Birthday, PostgreSQL

Wed, 08 Jul 2026 00:00:00 +0000

On July 8, 1996, the PostgreSQL community picked up the flame from Postgres95. Thirty years later, it has grown from a Berkeley research project into a default foundation of the global database ecosystem. Read more

Extensions for Everyone

Wed, 20 May 2026 00:00:00 +0000

A field report on the PostgreSQL extension ecosystem: 1,617 discovered projects, 511 deliverable extensions, and the shared delivery layer needed to make extensibility work for users, authors, vendors, and PostgreSQL hackers. Read more

504 Extensions: Expand the PostgreSQL Landscape

Mon, 13 Apr 2026 00:00:00 +0000

One GitHub issue turned into an extension sprint. 32 new additions, 504 in total, say a lot about where PostgreSQL is headed. Read more

Why PostgreSQL Won in the AI Era

Sat, 11 Apr 2026 00:00:00 +0000

Boring technology won the wildest era. A look at extensibility, agent choice, database cloning, and the future of the DBA. Read more

The Agent Moat: Runtime

Fri, 06 Feb 2026 00:00:00 +0000

A mediocre local who knows the terrain beats a genius parachuted into unknown territory. Intelligence without context is idle. An agent without a runtime is vapor. Read more

The Great Software Meltdown: When Translation Layers Get Squashed

Sat, 31 Jan 2026 00:00:00 +0000

SaaS and workflow software are dead. From APPs & GUIs to Agents, Databases, and CLI. Read more

Agent OS: We're Building DOS Again

Mon, 26 Jan 2026 00:00:00 +0000

LLM = CPU. Context = RAM. Database = Disk. Agent = App. The mapping is surprisingly clean. And if OS history is any guide, we may know what comes next — and what’s still missing. Read more

Git for Data: Instant PostgreSQL Database Cloning

Sat, 27 Dec 2025 00:00:00 +0000

How to instantly clone a massive PostgreSQL database without consuming extra storage? PostgreSQL 18 and XFS can spark some serious magic. Read more

Data 2025: Year in Review with Mike Stonebraker

Wed, 24 Dec 2025 00:00:00 +0000

A conversation between Mike Stonebraker (Turing Award Winner, Creator of PostgreSQL), Andy Pavlo (Carnegie Mellon), and the DBOS team. Read more

What Database Does AI Agent Need?

Sun, 21 Dec 2025 00:00:00 +0000

The bottleneck for AI agents isn’t in database engines but in upper-layer integration. Muscle memory, associative memory, and trial-and-error courage will be key. Read more

Why PostgreSQL Will Dominate the AI Era

Mon, 01 Dec 2025 00:00:00 +0000

Context window economics, the polyglot persistence problem, and the triumph of zero-glue architecture make PostgreSQL the database king of the AI era. Read more

Forging a China-Rooted, Global PostgreSQL Distro

Thu, 27 Nov 2025 00:00:00 +0000

PostgreSQL already won. The real battle is the distro layer. Will Chinese developers watch from the sideline or craft a PG “Ubuntu” for the world? Read more

Don't Run Docker Postgres for Production!

Thu, 20 Nov 2025 00:00:00 +0000

Tons of users running the official docker postgres image got burned during recent minor version upgrades. A friendly reminder: think twice before containerizing production databases. Read more

PG Extension Cloud: Unlocking PostgreSQL’s Entire Ecosystem

Wed, 12 Nov 2025 00:00:00 +0000

Free, open, no VPN. Install PostgreSQL and 555 extensions on 14 Linux distros × 6 PG versions via native RPM/DEB—and a tiny CLI. Read more

The PostgreSQL 'Supply Cut' and Trust Issues in Software Supply Chain

Fri, 15 Aug 2025 00:00:00 +0000

PostgreSQL official repos cut off global mirror sync channels, open-source binaries supply disrupted, revealing the true colors of various database and cloud vendors. Read more

PostgreSQL Dominates Database World, but Who Will Devour PG?

Tue, 05 Aug 2025 00:00:00 +0000

The same forces that once led MongoDB and MySQL toward closure are now at work in the PostgreSQL ecosystem. The PG world needs a distribution that represents “software freedom” values. Read more

PostgreSQL Has Dominated the Database World

Thu, 31 Jul 2025 00:00:00 +0000

The 2025 SO global developer survey results are fresh out, and PostgreSQL has become the most popular, most loved, and most wanted database for the third consecutive year. Nothing can stop PostgreSQL from consolidating the entire database world! Read more

Dongchedi Just Exposed “Smart Driving.” Where’s Our Dongku-Di?

Sat, 26 Jul 2025 00:00:00 +0000

Imagine a “closed-course” shootout for domestic databases and clouds, the way Dongchedi just humiliated 30+ autonomous cars. This industry needs its own stress test. Read more

Google AI Toolbox: Production-Ready Database MCP is Here?

Wed, 09 Jul 2025 00:00:00 +0000

Google recently launched a database MCP toolbox, perhaps the first production-ready solution. Read more

PGDG Cuts Off Mirror Sync Channel

Mon, 07 Jul 2025 00:00:00 +0000

PGDG cuts off FTP rsync sync channels, global mirror sites universally disconnected - this time they really strangled global users’ supply chain. Read more

Stop Arguing, The AI Era Database Has Been Settled

Tue, 03 Jun 2025 00:00:00 +0000

The database for the AI era has been settled. Capital markets are making intensive moves on PostgreSQL targets, with PG having become the default database for the AI era. Read more

Open Data Standards: Postgres, OTel, and Iceberg

Tue, 27 May 2025 00:00:00 +0000

Author: Paul Copplestone (Supabase CEO) | Original: Open Data Standards: Postgres, OTel, and Iceberg

Three emerging standards in the data world: Postgres, OpenTelemetry, and Iceberg. Postgres is already the de facto standard. Read more

Scaling Postgres to the Next Level at OpenAI

Mon, 19 May 2025 00:00:00 +0000

At PGConf.Dev 2025, Bohan Zhang from OpenAI shared how they scale PostgreSQL to millions of QPS using a single-primary, multi-replica architecture—proving that PostgreSQL can handle massive read workloads without sharding. Read more

Scaling Postgres to the Next Level at OpenAI

Mon, 19 May 2025 00:00:00 +0000

At PGConf.Dev 2025, Bohan Zhang from OpenAI shared how they scale PostgreSQL to support millions of queries per second using a single-primary, multi-replica architecture without sharding.

In the AI Era, Software Starts at the Database

Sun, 27 Apr 2025 00:00:00 +0000

Future software = Agent + Database. No middle tiers, just agents issuing CRUD. Database skills age well, and PostgreSQL is poised to be the agent-era default. Read more

MySQL vs. PostgreSQL @ 2025

Thu, 17 Apr 2025 00:00:00 +0000

A 2025 reality check on where PostgreSQL stands relative to MySQL across features, performance, quality, and ecosystem. Read more

Postgres Extension Day - See You There!

Wed, 09 Apr 2025 00:00:00 +0000

The annual PostgreSQL developer conference will be held in Montreal in May. Like the first PG Con.Dev, there’s also an additional dedicated event - Postgres Extensions Day Read more

OrioleDB is Coming! 4x Performance, Eliminates Pain Points, Storage-Compute Separation

Sun, 06 Apr 2025 00:00:00 +0000

A PG kernel fork acquired by Supabase, claiming to solve PG’s XID wraparound problem, eliminate table bloat issues, improve performance by 4x, and support cloud-native storage. Now part of the Pigsty family. Read more

OpenHalo: MySQL Wire-Compatible PostgreSQL is Here!

Thu, 03 Apr 2025 00:00:00 +0000

What? PostgreSQL can now be accessed using MySQL clients? That’s right, openHalo, which was open-sourced on April Fool’s Day, provides exactly this capability and has now joined the Pigsty kernel family. Read more

PGFS: Using Database as a Filesystem

Fri, 21 Mar 2025 00:00:00 +0000

Leverage JuiceFS to turn PostgreSQL into a filesystem with PITR capabilities! Read more

Database Planet Collision: When PG Falls for DuckDB

Wed, 12 Mar 2025 00:00:00 +0000

If you ask me, we’re on the brink of a cosmic collision in database-land, and Postgres + DuckDB is the meteor we should all be watching. Read more

Alicloud’s rds_duckdb: Tribute or Rip-Off?

Thu, 06 Mar 2025 00:00:00 +0000

Does bolting DuckDB onto RDS suddenly make open-source Postgres ‘trash’? Business and open source should be symbiotic. If a vendor only extracts without giving back, the community will spit it out." Read more

Comparing Oracle and PostgreSQL Transaction Systems

Thu, 27 Feb 2025 00:00:00 +0000

The PG community has started punching up: Cybertec’s Laurenz Albe breaks down how Oracle’s transaction system stacks against PostgreSQL. Read more

PostgreSQL Ecosystem Frontier Developments

Fri, 24 Jan 2025 00:00:00 +0000

Sharing some interesting recent developments in the PG ecosystem. Read more

Database as Business Architecture

Wed, 22 Jan 2025 00:00:00 +0000

Databases are the core of business architecture, but what happens if we go further and let databases become the business architecture itself? Read more

Pig, The Postgres Extension Wizard

Mon, 23 Dec 2024 00:00:00 +0000

Why would we need yet another package manager for PostgreSQL & extensions? Read more

7 Databases in 7 Weeks (2025)

Tue, 03 Dec 2024 00:00:00 +0000

Is PostgreSQL the king of boring databases? Here are seven databases worth studying in 2025: PostgreSQL, SQLite, DuckDB, ClickHouse, FoundationDB, TigerBeetle, and CockroachDB—each deserving a week of deep exploration. Read more

Solving Poker 24 with a Single SQL Query

Tue, 03 Dec 2024 00:00:00 +0000

An interesting but tricky puzzle: solving the 24 game with SQL. The PostgreSQL solution. Read more

Self-Hosting Supabase on PostgreSQL

Mon, 25 Nov 2024 00:00:00 +0000

Supabase is great, owning your own Supabase is even better! This tutorial covers how to self-host production-grade Supabase on local/cloud VMs using Pigsty. Read more

Don't Upgrade! Released and Immediately Pulled - Even PostgreSQL Isn't Immune to Epic Fails

Sat, 16 Nov 2024 00:00:00 +0000

Never deploy on Friday, or you’ll be working all weekend! PostgreSQL minor releases were pulled on the day of release, requiring emergency rollback. Read more

PostgreSQL 12 End-of-Life, PG 17 Takes the Throne

Thu, 14 Nov 2024 00:00:00 +0000

PG17 achieved extension ecosystem adaptation in half the time of PG16, with 300 available extensions ready for production use. PG 12 officially exits support lifecycle. Read more

Can MySQL Still Catch Up with PostgreSQL?

Tue, 05 Nov 2024 00:00:00 +0000

Author: Peter Zaitsev (Percona Founder) | Original: Can MySQL Catch Up with PostgreSQL?

Percona founder Peter Zaitsev discusses whether MySQL can still keep up with PostgreSQL. His views largely represent the MySQL community’s perspective. Read more

The ideal way to deliver PostgreSQL Extensions

Sat, 02 Nov 2024 00:00:00 +0000

PostgreSQL Is Eating the Database World through the power of extensibility. With 555 extensions powering PG, we may not say it’s invincible, but it’s definitely getting much closer. Read more

PostgreSQL Convention 2024

Wed, 09 Oct 2024 00:00:00 +0000

No rules, no standards. Some developer conventions for PostgreSQL 16. Read more

PostgreSQL 17 Released: No More Pretending!

Thu, 26 Sep 2024 00:00:00 +0000

PostgreSQL is now the world’s most advanced open-source database and has become the preferred open-source database for organizations of all sizes, matching or exceeding top commercial databases. Read more

MongoDB Has No Future: Good Marketing Can't Save a Rotten Mango

Wed, 04 Sep 2024 00:00:00 +0000

MongoDB has a terrible track record on integrity, lackluster products and technology, gets beaten by PG in correctness, performance, and functionality, with collapsing developer reputation, declining popularity, stock price halving, and expanding losses. Provocative marketing against PG can’t save it with “good marketing.” Read more

Can PostgreSQL Replace Microsoft SQL Server?

Mon, 02 Sep 2024 00:00:00 +0000

PostgreSQL can directly replace Oracle, SQL Server, and MongoDB at the kernel level. Of course, the most thorough replacement is SQL Server - AWS’s Babelfish provides wire-protocol-level compatibility. Read more

Whoever Integrates DuckDB Best Wins the OLAP World

Tue, 13 Aug 2024 00:00:00 +0000

Just like the vector database extension race two years ago, the current PostgreSQL ecosystem extension competition has begun revolving around DuckDB. MotherDuck’s official entry into the PostgreSQL extension space undoubtedly signals that competition has entered white-hot territory. Read more

StackOverflow 2024 Survey: PostgreSQL Has Gone Completely Berserk

Thu, 25 Jul 2024 00:00:00 +0000

The 2024 StackOverflow Global Developer Survey results are fresh out, and PostgreSQL has become the most popular, most loved, and most wanted database globally for the second consecutive year. Nothing can stop PostgreSQL from devouring the entire database world anymore! Read more

MySQL is dead, Long live PostgreSQL!

Mon, 08 Jul 2024 00:00:00 +0000

This July, MySQL 9.0 was finally released—a full eight years after its last major version, 8.0 (@2016-09). Read more

Self-Hosting Dify with PG, PGVector, and Pigsty

Sat, 22 Jun 2024 00:00:00 +0000

Dify is an open-source LLM app development platform. This article explains how to self-host Dify using Pigsty. Read more

PGCon.Dev 2024, The conf that shutdown PG for a week

Mon, 17 Jun 2024 00:00:00 +0000

Experience & Feeling on the PGCon.Dev 2024 Read more

PostgreSQL 17 Beta1 Released!

Fri, 24 May 2024 00:00:00 +0000

The PostgreSQL Global Development Group announces PostgreSQL 17’s first Beta version is now available. This time, PostgreSQL has truly burst the toothpaste tube! Read more

Why PostgreSQL is the Future Standard?

Thu, 16 May 2024 00:00:00 +0000

Author: Ajay Kulkarni (TimescaleDB CEO) | Original: Why PostgreSQL Is the Bedrock for the Future of Data

One of the biggest trends in software development today is PostgreSQL becoming the de facto database standard. This article explains why. Read more

Will PostgreSQL Change Its License?

Wed, 20 Mar 2024 00:00:00 +0000

Author: Jonathan Katz (PostgreSQL Core Team) | Original: PostgreSQL Will Not Change Its License

PostgreSQL will not change its license. This article is a response from PostgreSQL core team members on this question. Read more

PostgreSQL is Eating the Database World

Mon, 04 Mar 2024 00:00:00 +0000

PostgreSQL is not just a simple relational database, but an abstract framework for data management with the power to devour the entire database world. “Just use Postgres for everything” has become a mainstream best practice. Read more

Postgres is eating the database world

Mon, 04 Mar 2024 00:00:00 +0000

PostgreSQL isn’t just a simple relational database; it’s a data management framework with the potential to engulf the entire database realm. The trend of “Using Postgres for Everything” is no longer limited to a few elite teams but is becoming a mainstream best practice.

Technical Minimalism: Just Use PostgreSQL for Everything

Mon, 19 Feb 2024 00:00:00 +0000

Whether production databases should be containerized remains a controversial topic. From a DBA’s perspective, I believe that currently, putting production databases in Docker is still a bad idea. Read more

New PostgreSQL Ecosystem Player: ParadeDB

Sun, 18 Feb 2024 00:00:00 +0000

ParadeDB aims to be an Elasticsearch alternative: “Modern Elasticsearch Alternative built on Postgres” — PostgreSQL for search and analytics. Read more

PostgreSQL's Impressive Scalability

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. Read more

PostgreSQL Outlook for 2024

Fri, 05 Jan 2024 00:00:00 +0000

Author: Jonathan Katz (PostgreSQL Core Team) | Original: PostgreSQL 2024

PostgreSQL core team member Jonathan Katz’s outlook for PostgreSQL in 2024, reviewing the progress made over the past few years. Read more

PostgreSQL Wins 2024 Database of the Year Award! (Fifth Time)

Fri, 05 Jan 2024 00:00:00 +0000

DB-Engines officially announced today that PostgreSQL has once again been crowned “Database of the Year.” This is the fifth time PG has received this honor in the past seven years. If not for Snowflake stealing the spotlight for two years, the database world would have almost become a PostgreSQL solo show. Read more

PostgreSQL Macro Query Optimization with pg_stat_statements

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. Read more

FerretDB: PostgreSQL Disguised as MongoDB

Sun, 08 Oct 2023 00:00:00 +0000

FerretDB aims to provide a truly open-source MongoDB alternative based on PostgreSQL. Read more

How to Use pg_filedump for Data Recovery?

Wed, 27 Sep 2023 00:00:00 +0000

Backups are a DBA’s lifeline — but what if your PostgreSQL database has already exploded and you have no backups? Maybe pg_filedump can help you! Read more

Vector is the New JSON

Sun, 06 Aug 2023 00:00:00 +0000

Author: Jonathan Katz (PostgreSQL Core Team) | Original: Vectors are the new JSON in PostgreSQL

Vectors will become a key element in building applications, just like JSON historically. PostgreSQL leads the AI era with vector extensions. Read more

PostgreSQL, The most successful database

Wed, 28 Jun 2023 00:00:00 +0000

StackOverflow 2023 Survey shows PostgreSQL is the most popular, loved, and wanted database, solidifying its status as the ‘Linux of Database’. Read more

AI Large Models and Vector Database PGVector

Wed, 10 May 2023 00:00:00 +0000

This article focuses on vector databases hyped by AI, introduces the basic principles of AI embeddings and vector storage/retrieval, and demonstrates the functionality, performance, acquisition, and application of the vector database extension PGVECTOR through a concrete knowledge base retrieval case study. Read more

How Powerful is PostgreSQL Really?

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. Read more

Why PostgreSQL is the Most Successful Database?

Tue, 12 Jul 2022 00:00:00 +0000

Database users are developers, but what about developers’ preferences, likes, and choices? Looking at StackOverflow survey results over the past six years, it’s clear that in 2022, PostgreSQL has won all three categories, becoming literally the “most successful database” Read more

Ready-to-Use PostgreSQL Distribution: Pigsty

Mon, 24 May 2021 00:00:00 +0000

Yesterday I gave a live presentation in the PostgreSQL Chinese community, introducing the open-source PostgreSQL full-stack solution: Pigsty. Read more

Why Does PostgreSQL Have a Bright Future?

Sat, 08 May 2021 00:00:00 +0000

Databases are the core component of information systems, relational databases are the absolute backbone of databases, and PostgreSQL is the world’s most advanced open source relational database. With such favorable timing and positioning, how can it not achieve great success? Read more

Implementing Advanced Fuzzy Search

Fri, 05 Mar 2021 00:00:00 +0000

How to implement relatively complex fuzzy search logic in PostgreSQL? Read more

Localization and Collation Rules in PostgreSQL

Fri, 05 Mar 2021 00:00:00 +0000

What? Don’t know what COLLATION is? Remember one thing: using C COLLATE is always the right choice! Read more

PG Replica Identity Explained

Wed, 03 Mar 2021 00:00:00 +0000

Replica identity is important - it determines the success or failure of logical replication Read more

PostgreSQL Logical Replication Deep Dive

Wed, 03 Mar 2021 00:00:00 +0000

This article introduces the principles and best practices of logical replication in PostgreSQL 13. Read more

A Methodology for Diagnosing PostgreSQL Slow Queries

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. Read more

Incident-Report: Patroni Failure Due to Time Travel

Mon, 22 Feb 2021 00:00:00 +0000

Machine restarted due to failure, NTP service corrected PG time after PG startup, causing Patroni to fail to start. Read more

Online Primary Key Column Type Change

Fri, 15 Jan 2021 00:00:00 +0000

How to change column types online, such as upgrading from INT to BIGINT? Read more

Golden Monitoring Metrics: Errors, Latency, Throughput, Saturation

Fri, 06 Nov 2020 00:00:00 +0000

Understanding the golden monitoring metrics in PostgreSQL Read more

Database Cluster Management Concepts and Entity Naming Conventions

Wed, 03 Jun 2020 00:00:00 +0000

Concepts and their naming are very important. Naming style reflects an engineer’s understanding of system architecture. Poorly defined concepts lead to communication confusion, while carelessly set names create unexpected additional burden. Therefore, they need careful design. Read more

PostgreSQL's KPI

Fri, 29 May 2020 00:00:00 +0000

Managing databases is similar to managing people - both need KPIs (Key Performance Indicators). So what are database KPIs? This article introduces a way to measure PostgreSQL load: using a single horizontally comparable metric that is basically independent of workload type and machine type, called PG Load. Read more

Online PostgreSQL Column Type Migration

Thu, 30 Jan 2020 00:00:00 +0000

How to modify PostgreSQL column types online? A general approach Read more

Frontend-Backend Communication Wire Protocol

Tue, 12 Nov 2019 00:00:00 +0000

Understanding the TCP protocol used for communication between PostgreSQL server and client, and printing messages using Go Read more

Transaction Isolation Level Considerations

Tue, 12 Nov 2019 00:00:00 +0000

PostgreSQL actually has only two transaction isolation levels: Read Committed and Serializable Read more

Incident: PostgreSQL Extension Installation Causes Connection Failure

Thu, 13 Jun 2019 00:00:00 +0000

Today encountered an interesting case where a customer reported database connection issues caused by extensions. Read more

CDC Change Data Capture Mechanisms

Wed, 12 Jun 2019 00:00:00 +0000

Change Data Capture is an interesting ETL alternative solution. Read more

Locks in PostgreSQL

Tue, 11 Jun 2019 00:00:00 +0000

Snapshot isolation does most of the heavy lifting in PG, but locks still matter. Here’s a practical guide to table locks, row locks, intention locks, and pg_locks. Read more

O(n2) Complexity of GIN Search

Fri, 12 Apr 2019 00:00:00 +0000

When GIN indexes are used to search with very long keyword lists, performance degrades significantly. This article explains why GIN index keyword search has O(n^2) time complexity. Read more

PostgreSQL Common Replication Topology Plans

Fri, 29 Mar 2019 00:00:00 +0000

Replication is one of the core issues in system architecture. Read more

Warm Standby: Using pg_receivewal

Sat, 02 Mar 2019 00:00:00 +0000

There are various backup strategies. Physical backups can usually be divided into four types. Read more

Incident-Report: Connection-Pool Contamination Caused by pg_dump

Tue, 11 Dec 2018 00:00:00 +0000

Sometimes, interactions between components manifest in subtle ways. For example, using pg_dump to export data from a connection pool can cause connection pool contamination issues. Read more

PostgreSQL Data Page Corruption Repair

Thu, 29 Nov 2018 00:00:00 +0000

Using binary editing to repair PostgreSQL data pages, and how to make a primary key query return two records. Read more

Relation Bloat Monitoring and Management

Sat, 06 Oct 2018 00:00:00 +0000

PostgreSQL uses MVCC as its primary concurrency control technology. While it has many benefits, it also brings other effects, such as relation bloat. Read more

Getting Started with PipelineDB

Fri, 07 Sep 2018 00:00:00 +0000

PipelineDB is a PostgreSQL extension for streaming analytics. Here’s how to install it and build continuous views over live data. Read more

TimescaleDB Quick Start

Fri, 07 Sep 2018 00:00:00 +0000

TimescaleDB is a PostgreSQL extension plugin that provides time-series database functionality. Read more

Incident-Report: Integer Overflow from Rapid Sequence Number Consumption

Fri, 20 Jul 2018 00:00:00 +0000

If you use Integer sequences on tables, you should consider potential overflow scenarios. Read more

Incident-Report: PostgreSQL Transaction ID Wraparound

Fri, 20 Jul 2018 00:00:00 +0000

XID WrapAround is perhaps a unique type of failure specific to PostgreSQL Read more

GeoIP Geographic Reverse Lookup Optimization

Sat, 07 Jul 2018 00:00:00 +0000

A common requirement in application development is GeoIP conversion - converting source IP addresses to geographic coordinates or administrative divisions (country-state-city-county-town-village) Read more

PostgreSQL Trigger Usage Considerations

Sat, 07 Jul 2018 00:00:00 +0000

Detailed understanding of trigger management and usage in PostgreSQL Read more

PostgreSQL Development Convention (2018 Edition)

Wed, 20 Jun 2018 00:00:00 +0000

Without rules, there can be no order. This article compiles a development specification for PostgreSQL database principles and features, which can reduce confusion encountered when using PostgreSQL. Read more

What Are PostgreSQL's Advantages?

Sun, 10 Jun 2018 00:00:00 +0000

PostgreSQL’s slogan is “The World’s Most Advanced Open-Source Relational Database,” but I think the most vivid characterization should be: The Full-Stack Database That Does It All - one tool to rule them all. Read more

Efficient Administrative Region Lookup with PostGIS

Wed, 06 Jun 2018 00:00:00 +0000

How to efficiently solve the typical reverse geocoding problem: determining administrative regions based on user coordinates. Read more

KNN Ultimate Optimization: From RDS to PostGIS

Wed, 06 Jun 2018 00:00:00 +0000

Ultimate optimization of KNN problems, from traditional relational design to PostGIS Read more

Monitoring Table Size in PostgreSQL

Mon, 14 May 2018 00:00:00 +0000

Tables in PostgreSQL correspond to many physical files. This article explains how to calculate the actual size of a table in PostgreSQL. Read more

PgAdmin Installation and Configuration

Sat, 14 Apr 2018 00:00:00 +0000

PgAdmin is a GUI program for managing PostgreSQL, written in Python, but it’s quite dated and requires some additional configuration. Read more

Incident-Report: Uneven Load Avalanche

Sun, 08 Apr 2018 00:00:00 +0000

Recently there was a perplexing incident where a database had half its data volume and load migrated away, but ended up being overwhelmed due to increased load. Read more

Bash and psql Tips

Sat, 07 Apr 2018 00:00:00 +0000

Some tips for interacting between PostgreSQL and Bash. Read more

Distinct On: Remove Duplicate Data

Fri, 06 Apr 2018 00:00:00 +0000

Use Distinct On extension clause to quickly find records with maximum/minimum values within groups Read more

Function Volatility Classification Levels

Fri, 06 Apr 2018 00:00:00 +0000

PostgreSQL functions have three volatility levels by default. Proper use can significantly improve performance. Read more

Implementing Mutual Exclusion Constraints with Exclude

Fri, 06 Apr 2018 00:00:00 +0000

Exclude constraint is a PostgreSQL extension that can implement more advanced and sophisticated database constraints. Read more

PostgreSQL Routine Maintenance

Sat, 10 Feb 2018 00:00:00 +0000

Cars need oil changes, databases need maintenance. For PG, three important maintenance tasks: backup, repack, vacuum Read more

Backup and Recovery Methods Overview

Fri, 09 Feb 2018 00:00:00 +0000

Backup is the foundation of a DBA’s livelihood. With backups, there’s no need to panic. Read more

PgBackRest2 Documentation

Wed, 07 Feb 2018 00:00:00 +0000

PgBackRest is a set of PostgreSQL backup tools written in Perl Read more

Pgbouncer Quick Start

Wed, 07 Feb 2018 00:00:00 +0000

Pgbouncer is a lightweight database connection pool. This guide covers basic Pgbouncer configuration, management, and usage. Read more

PostgreSQL Server Log Regular Configuration

Tue, 06 Feb 2018 00:00:00 +0000

It’s recommended to configure PostgreSQL’s log format as CSV for easy analysis, and it can be directly imported into PostgreSQL data tables. Read more

Testing Disk Performance with FIO

Tue, 06 Feb 2018 00:00:00 +0000

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

Using sysbench to Test PostgreSQL Performance

Tue, 06 Feb 2018 00:00:00 +0000

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

Changing Engines Mid-Flight — PostgreSQL Zero-Downtime Data Migration

Tue, 06 Feb 2018 00:00:00 +0000

Data migration typically involves stopping services for updates. Zero-downtime data migration is a relatively advanced operation. Read more

Finding Unused Indexes

Sun, 04 Feb 2018 00:00:00 +0000

Indexes are useful, but they’re not free. Unused indexes are a waste. Use these methods to identify unused indexes. Read more

Batch Configure SSH Passwordless Login

Sun, 07 Jan 2018 00:00:00 +0000

Quick configuration for passwordless login to all machines Read more

Wireshark Packet Capture Protocol Analysis

Fri, 05 Jan 2018 00:00:00 +0000

Wireshark is a very useful tool, especially suitable for analyzing network protocols. Here’s a simple introduction to using Wireshark for packet capture and PostgreSQL protocol analysis. Read more

The Versatile file_fdw — Reading System Information from Your Database

Fri, 01 Dec 2017 00:00:00 +0000

With file_fdw, you can easily view operating system information, fetch network data, and feed various data sources into your database for unified viewing and management. Read more

Common Linux Statistics CLI Tools

Thu, 07 Sep 2017 00:00:00 +0000

top, free, vmstat, iostat: Quick reference for four commonly used CLI tools Read more

Installing PostGIS from Source

Thu, 07 Sep 2017 00:00:00 +0000

PostGIS is PostgreSQL’s killer extension, but compiling and installing it isn’t easy. Read more

Go Database Tutorial: database/sql

Thu, 24 Aug 2017 00:00:00 +0000

Similar to JDBC, Go also has a standard database access interface. This article details how to use database/sql in Go and important considerations. Read more

Implementing Cache Synchronization with Go and PostgreSQL

Thu, 03 Aug 2017 00:00:00 +0000

Cleverly utilizing PostgreSQL’s Notify feature, you can conveniently notify applications of metadata changes and implement trigger-based logical replication. Read more

Auditing Data Changes with Triggers

Fri, 09 Jun 2017 00:00:00 +0000

Sometimes we want to record important metadata changes for audit purposes. PostgreSQL triggers can conveniently solve this need automatically. Read more

Building an ItemCF Recommender in Pure SQL

Wed, 05 Apr 2017 00:00:00 +0000

Five minutes, PostgreSQL, and the MovieLens dataset—that’s all you need to implement a classic item-based collaborative filtering recommender. Read more

UUID Properties, Principles and Applications

Sun, 06 Nov 2016 00:00:00 +0000

UUID properties, principles and applications, and how to manipulate UUIDs using PostgreSQL stored procedures. Read more

PostgreSQL MongoFDW Installation and Deployment

Sat, 28 May 2016 00:00:00 +0000

Recently had business requirements to access MongoDB through PostgreSQL FDW, but compiling MongoDB FDW is really a nightmare. Read more