CL about > open source craigslist is a big believer in open source software, and relies on Linux, MySQL, Perl, Apache, Sphinx, Redis, Haraka, and many others. craigslist (CL) has released the following open source projects: CL blob service - a simple HTTP-based, multi-master storage service designed for scale-out and multi-datacenter deployments: multi-master architecture with no single point of failure scales well for both read and write intensive workloads tracks TTLs for automatic expiration and purging of blobs designed for both local and multiple data center replication pluggable index and storage interface (uses SQLite for index and filesystem for storage by default) CL image service - large scale image resizing and processing HTTP service: flexible API to choose any quality, size, and center-cropping automatically handles orientation operations from EXIF data stores resized images in the blob service (could use other stores) memcache cluster proxy (MCP) - a high-performance modular clustering HTTP reverse proxy: high-performance event-driven daemon flexible configuration, easily extensible framework uses standard memcached memory store for caching supports PCRE and rule-based traffic routing by URL, headers, and more tracks health of origin servers, routes around failures provides configurable URL redirects, rewrites, and real-time header transformations In addition, craigslist contributes code to the following open source projects: Haraka: added the smtp_client code that helps support pooled connections for proxy queues rewrote all of the smtp_proxy and smtp_forward code major contributions to the test suite plugin that does strict DNS checking, DNS access control lists contributions to bannering support logging infrastructure changes for more robust logging plugins for aliases, access lists, etc. Redis: perl-AnyEvent-Redis-Federated: an event-based redis client that implements client-side sharding in Perl redis_util: s collection of utilities for node-redis provided support for included config files Sphinx: provided the original persistent connections implementation craigslist sponsors useful sphinx feature developments, such as the TRUNCATE INDEX command for real-time sphinx The craigslist Charitable Fund supports open source nonprofit organizations including: Apache Software Foundation Free Software Foundation Gnome Foundation Mozilla Foundation Open Source Initiative OpenStreetMap.us Perl Foundation PostgreSQL Python Software Foundation Software in the Public Interest © 2021 craigslist help safety privacynew feedback terms about mobile