- update to 4.5.1:
* Fixed entry_size field for result entries.
* The actual compression level is now once again stored in the cache entry
header.
* Corrected error handling for unconstructible secondary storage backends. For
instance, this avoids a crash when a Redis server can't be reached.
* Made various improvements to the cache entry format. Among other things, the
header now contains a creation timestamp and a note of the ccache version used
to create the entry. The cache entry checksum has also been upgraded to use
128-bit XXH3 instead 64-bit XXH3.
* Made HTTP keep-alive configurable, defaulting to off for now.
* Added support for rewriting absolute path to Clang option `--gcc-toolchain`.
* Fixed a problem with special characters in the user info part of URLs for HTTP
storage.
* The hard link and file clone features are now disabled when secondary storage
is used since they only work for the local primary cache.