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| -rw-r--r-- | README | 52 |
1 files changed, 28 insertions, 24 deletions
diff --git a/README b/README index 010dd5c..17e284e 100644 --- a/README +++ b/README @@ -2,34 +2,38 @@ cgit - cgi for git -This is an attempt to create a fast web interface for the git scm, using a -frontside cache to decrease server io-pressure. +This is an attempt to create a fast web interface for the git scm, using a +builtin cache to decrease server io-pressure. -When cgit is invoked, it looks for a cached page matching the request. If no -such cachefile exist (or it has expired), it is (re)generated. Finally, the -cachefile is returned to the client. -If the cachefile has expired, but cgit is unable to lock the cachefile, the -client will get the stale cachefile after all. This is done to favour page -throughput over page freshness. +Installation + +$ $EDITOR Makefile +$ make +$ sudo make install + +Note: cgit requires the git and xdiff libraries. Currently, the makefile +expects these files to be found in '../git/libgit.a' and '../git/xdiff/lib.a', +where they will be if you have built git from source in a parallell directory. + -Also, when a cachefile is generated, a few cache-related http-headers are -created: "Modified" is set to current time(2), while "Expires" is set to -time(2) + <cachefile TTL> * 60 (unless the TTL is negative, in which case it -is read as "60 * 60 * 24 * 365"). This is done to avoid repeated requests for -already visited pages. +Runtime configuration -The following cache-related options can be set in /etc/cgitrc: +The file /etc/cgitrc is read by cgit before handling a request. A template +cgitrc is shipped with the sources, and all parameters and default values +can be found in this file. - cache-root=<path> root directory for cache files - cache-root-ttl=<min> TTL for the repo listing page - cache-repo-ttl=<min> TTL for repo summary pages - cache-dynamic-ttl=<min> TTL for pages with symbolic references - cache-static-ttl=<min> TTL for pages with sha1 references -The cachefiles are split into different directories, based on the requested -repository and page: +The cache + +When cgit is invoked it looks for a cachefile matching the request and +returns it to the client. If no such cachefile exist (or if it has expired), +the content for the request is written into the proper cachefile before the +file is returned. + +If the cachefile has expired but cgit is unable to obtain a lock for it, the +stale cachefile is returned to the client. This is done to favour page +throughput over page freshness. - Repo listing: <cachedir>/index.html - Repo summary: <cachedir>/<repo>/index.html - Repo subpage: <cachedir>/<repo>/<page>/<querystring>.html +The generated content contains the complete response to the client, including +the http-headers "Modified" and "Expires". |