This is an Apache 2.2+ module that supports serving files from MongoDB GridFS. See http://www.mongodb.org/ and http://www.mongodb.org/display/DOCS/GridFS for more information. See LICENSE file for licensing details. Availability: This code is available free of charge from https://bitbucket.org/onyxmaster/mod_gridfs/. Old driver that is written in C and used MongoDB C driver is still available in the "c-driver" branch. Building (see next section for Ubuntu fast-forward instructions): Make sure you have g++ and boost libraries (filesystem, system, thread) installed Install Apache 2.2+ and APXS Grab the module from https://bitbucket.org/onyxmaster/mod_gridfs/, remember the absolute path to the directory (referenced as /path/to/mod_gridfs later on) Grab MongoDB from https://github.com/mongodb/mongo (post-2.0 branch required) and go to its directory Build MongoDB C++ driver source package from MongoDB sources: scons distclient Unpack the resulting archive (mongo-cxx-driver.tgz) and go it its directory Fix the driver build environment (build static library with PIC to allow module to be built as a shared library): echo 'env.Append(CCFLAGS="-fPIC")' >> SConstruct Apply the GridFS slaveOk patch: patch -d src/mongo/client < /path/to/mod_gridfs/patches/gridfs-slaveok Build the driver: scons Ubuntu pre-build instructions: sudo apt-get -y install wget g++ apache2 apache2-threaded-dev libboost-filesystem-dev libboost-system-dev libboost-thread-dev Ubuntu build instructions: wget --no-check-certificate https://bitbucket.org/onyxmaster/mod_gridfs/get/release.tar.gz tar xzf release.tar.gz rm release.tar.gz mv onyxmaster-mod_gridfs-* mod_gridfs cd mod_gridfs wget --no-check-certificate https://github.com/mongodb/mongo/tarball/master tar xzf master rm master mv mongodb-mongo-* mongo scons -C mongo distclient tar xzf mongo/mongo-cxx-driver.tgz rm -rf mongo echo 'env.Append(CCFLAGS="-fPIC")' >> mongo-cxx-driver/SConstruct patch -d mongo-cxx-driver/src/mongo/client < patches/gridfs-slaveok scons -C mongo-cxx-driver make -C gridfs Ubuntu pre-installation instructions: sudo apt-get -y install apache2 libstdc++6 libboost-filesystem libboost-system libboost-thread Ubuntu installation instructions (copy mod_gridfs directory to a target machine first): cd mod_gridfs sudo make -C gridfs install Configuration: GridFSConnection -- Connection string ("host[:port]" for single hosts, "replicaSetName/host[:port],[host[:port], ...]" for replica sets) GridFSDatabase <database> -- Set database name GridFSCacheMaxAge <maxAge> -- Optional, set cache max age in seconds (default is 1 week, maximum is 10 years), set to 0 to disable expiration caching (see Notes below) GridFSConnectTimeout <timeout> -- Optional, set MongoDB connection timeout in seconds (default is 5 seconds) GridFSSlaveOk <On|Off> -- Optional, set MongoDB slaveOk mode (horizontal sharding) Configuration example: GridFSConnection rsTest/db1,db2 GridFSDatabase my_database Implementation notes: This module was developed to serve static content that is cached on frontend reverse proxies, hence by default it sets the following headers: Cache-Control: public, max-age=<max_age> Expires: <Date+max_age> Last-Modified: <uploadDate> Etag: <md5> (if MD5 is available for file) You can disable "Cache-Control" and "Expires" headers by setting GridFSCacheMaxAge to 0. Content-type, if not specified in GridFS file "contentType" field, is automatically determined using mod_mime (or any other type checker module that works without accessing file contents). Also, it supports HEAD requests, conditional queries (If-Modified-Since and/or If-None-Match with proper 304 Not Modified response). It doesn't support range queries (not going to be implemented soon). Known problems: If you're using gcc version less than 4.5, Apache parent process would crash when reloading modules (on a restart after module list is updated). This is a known problem with gcc and libstdc++. Unfortunately, the only workaround is to upgrade your compiler and standard C++ library.