links for 2008-03-06

Cfengine is an automated suite of programs for configuring and maintaining Unix-like computers.

IPVS running on a host acts as a load balancer at the front of a cluster of real servers, it can direct requests for TCP/UDP based services to the real servers, and makes services of the real servers to appear as a virtual service on a single IP address.

Nagios® is an Open Source host, service and network monitoring program.

Cacti is a complete network graphing solution designed to harness the power of RRDTool’s data storage and graphing functionality.

Watir is a simple open-source library for automating web browsers. It allows you to write tests that are easy to read and easy to maintain. It is optimized for simplicity and flexibility.

FireWatir is an tool that allows WATiR (http://www.openqa.org/watir/) scripts written for IE to work with the Firefox browser as well.

creating unit test coverage for your module using SimpleTest.

OpenSTA is a distributed software testing architecture designed around CORBA,

Does memory cache

The Alternative PHP Cache (APC) is a free and open opcode cache for PHP. It was conceived of to provide a free, open, and robust framework for caching and optimizing PHP intermediate code.

Memcache module provides handy procedural and object oriented interface to memcached, highly effective caching daemon, which was especially designed to decrease database load in dynamic web applications.

innotop, a text-mode MySQL and InnoDB monitoring tool

mysqlsla (MySQL Statement Log Analyzer) analyzes MySQL slow and general log files. It also analyzes “raw” log files: flat files containing semi-colon new-line terminated SQL statements.

mysqlreport makes a friendly report of important MySQL status values. mysqlreport transforms the values from SHOW STATUS into an easy-to-read report that provides an in-depth understanding of how well MySQL is running.

YSlow analyzes web pages and tells you why they’re slow based on the rules for high performance web sites. YSlow is a Firefox add-on integrated with the popular Firebug web development tool.

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response times by caching and reusing frequently-requested web pages.

Varnish is a state-of-the-art, high-performance HTTP accelerator. Varnish is targeted primarily at the FreeBSD 6/7 and Linux 2.6 platforms, and takes full advantage of the virtual memory system and advanced I/O features offered by these operating systems.

This module provides static page caching for Drupal 4.7 and 5.x, enabling a potentially very significant performance and scalability boost for heavily-trafficked Drupal sites.

A file-based caching mechanism for serving up cached Drupal pages instead of using the database ‘cache’ table. This approach is generally faster since the web server doesn’t need to initialize a database connection and crunch through a bunch of PHP files

It builds on concepts from Drupal core’s XMLRPC interface, but abstracts service callbacks so that they may be used with multiple interfaces like XMLRPC, SOAP, REST, AMF.