plproxy 2.10.0

This Release
plproxy 2.10.0
Date
Status
Stable
Other Releases
Abstract
Database partitioning implemented as procedural language
Description
PL/Proxy is database partitioning system implemented as PL language.
Released By
markokr
License
ISC
Resources
Special Files
Tags

Extensions

plproxy 2.10.0
Database partitioning implemented as procedural language

Documentation

config
PL/Proxy Cluster Configuration
faq
PL/Proxy FAQ
tutorial
PL/Proxy tutorial
todo
PL/Proxy todo list
NEWS
PL/Proxy Changelog
syntax
PL/Proxy Language Syntax

README

PL/Proxy

PL/Proxy is a PostgreSQL procedural language (PL) handler that allows to do remote procedure calls between PostgreSQL databases, with optional sharding.

Features

Language has four statements:

  • Pick remote database:
    • CLUSTER <name> - use pre-configured cluster that has many databases
    • CONNECT <connstr> - use connstr directly
  • Set execution type:
    • RUN ON ALL - query is run on all databases in parallel
    • RUN ON ANY - pick server randomly
    • RUN ON <hash> - map hash to database
  • Replace default query:
    • SELECT ...

Example:

sql CREATE FUNCTION get_user_settings(i_username text) RETURNS SETOF user_settings AS $$ RUN ON namehash(i_username): $$ LANGUAGE plproxy;

It will run function with same name in remote database and fetch user_settings record.

Installation

For installation there must be PostgreSQL dev environment installed and pg_config in the PATH. Then just run:

$ make
$ make install

To run regression tests:

$ make installcheck

Location to pg_config can be set via PG_CONFIG variable:

$ make PG_CONFIG=/path/to/pg_config
$ make install PG_CONFIG=/path/to/pg_config
$ make installcheck PG_CONFIG=/path/to/pg_config

Note: Encoding regression test fails if the Postgres instance is not created with C locale. It can be considered expected failure then.