# Enable the X-Cache-Detail header
CacheDetailHeader on

# Don't cache WordPress admin
CacheDisable /wp-admin

# Cache all but forward proxy url's (normal or quick handler)
CacheEnable disk /

# Add a header to show if it was served from cache
CacheHeader on

# Ignore no-cache commands
# CacheIgnoreCacheControl On

# Do not store Set-Cookie headers with the cache or you'll get session poisoning
CacheIgnoreHeaders Set-Cookie

# With CacheIgnoreNoLastMod On set, we don't need to define expires headers
# for the pages to be cached by the server. And we don't want to because we'll
# want to control the cache on the server. We don't want browsers to cache.
CacheIgnoreNoLastMod On

# The CacheIgnoreQueryString directive tells the cache to cache requests even if no 
# expiration time is specified, and to reply with a cached reply even if the query 
# string differs.
# CacheIgnoreQueryString On

# CacheIgnoreURLSessionIdentifiers

# CacheKeyBaseURL

# If no expiry date is set, calculate one based on last modified
# expiry-period = time-since-last-modified-date * factor
# expiry-date = current-date + expiry-period
# default 0.1
CacheLastModifiedFactor 0.5

# Enable cache lock
# CacheLock on

# CacheLockMaxAge
# CacheLockPath
# CacheMaxExpire
# CacheMinExpire

# If there is content in your cache that normally requires authentication or access 
# control, it will be accessible to anyone without authentication if the 
# CacheQuickHandler is set to “on”
CacheQuickHandler off

# Serve stale data on error.
# CacheStaleOnError on

# CacheStoreExpired
# CacheStoreNoStore
# CacheStorePrivate

<IfModule mod_cache_disk.c>
    # Sets the number of characters for each subdirectory name in the cache hierarchy
    CacheDirLength 1

    # Use CacheDirLength=2 and CacheDirLevels=1 to ensure htcacheclean will not take forever 
    # when cleaning up your cache directory.
    CacheDirLevels 2

    # The maximum size (in bytes) of a document to be placed in the cache
    # CacheMaxFileSize 1000000

    # The minimum size (in bytes) of a document to be placed in the cache
    # CacheMinFileSize 1

    # The minimum size (in bytes) of the document to read and be cached before sending the data downstream
    # CacheReadSize 0

    # The minimum time (in milliseconds) that should elapse while reading before data is sent downstream
    # CacheReadTime 0

    # The directory root under which cache files are stored
    # Be sure to set ownership of this file to the 'nobody' user or no files will 
    # be written to it
    CacheRoot   "/var/cache/apache/"
</IfModule>