Introduction

SQL Relay is a persistent database connection pooling, proxying, load balancing and query routing system for Unix and Linux.

With SQL Relay, you can speed up database-driven web-based applications, enhance the scalability of database-driven web-based applications, distribute access to replicated databases, throttle database access, access databases from unsupported platforms and migrate applications from one database to another.

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Backend Connectivity

SQL Relay provides connectivity to many different databases.

Oracle
Sybase
MS SQL Server
IBM DB2
MySQL
PostgreSQL
Firebird
SQLite
ODBC
MS Access
Blackray

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Frontend Connectivity

SQL Relay provides native API's with advanced features like bind variables, multi-row fetches, client-side result set caching and suspended transactions for many different programming languages.

C
C++
Perl
Python
PHP
Ruby
Java
TCL
Erlang

SQL Relay also provides drivers for many existing database abstration layers.

Perl DBD
Python DB
Ruby DBD
PHP Pear DB
Zope
ODBC

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Drop-In Replacement Libraries

If you have an existing application that was coded using a native database API, and are running into some of the problems that SQL Relay was designed to solve. You may be able to use SQL Relay without modifying your existing code.

MySQL
PostgreSQL