纯java实现的git操作库。
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JGit configuration options

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git option description
option defined by native git
jgit custom option not supported by native git

core options

option default git option description
core.bigFileThreshold 52428800 (50 MiB) Maximum file size that will be delta compressed. Files larger than this size are stored deflated, without attempting delta compression.
core.compression -1 (default compression) An integer -1..9, indicating a default compression level. -1 is the zlib default. 0 means no compression, and 1..9 are various speed/size tradeoffs, 9 being slowest.

gc options

option default git option description
gc.aggressiveDepth 50 The depth parameter used in the delta compression algorithm used by aggressive garbage collection.
gc.aggressiveWindow 250 The window size parameter used in the delta compression algorithm used by aggressive garbage collection.
gc.auto 6700 Number of loose objects until auto gc combines all loose objects into a pack and consolidates all existing packs into one. Setting to 0 disables automatic packing of loose objects.
gc.autoDetach true Make auto gc return immediately and run in background.
gc.autoPackLimit 50 Number of packs until auto gc consolidates existing packs (except those marked with a .keep file) into a single pack. Setting gc.autoPackLimit to 0 disables automatic consolidation of packs.
gc.logExpiry 1.day.ago If the file gc.log exists, then auto gc will print its content and exit successfully instead of running unless that file is more than gc.logExpiry old.
gc.pruneExpire 2.weeks.ago Grace period after which unreachable objects will be pruned.
gc.prunePackExpire 1.hour.ago Grace period after which packfiles only containing unreachable objects will be pruned.

pack options

option default git option description
pack.bitmapContiguousCommitCount 100 Count of most recent commits for which to build bitmaps.
pack.bitmapDistantCommitSpan 5000 Span of commits when building bitmaps for distant history.
pack.bitmapExcessiveBranchCount 100 The count of branches deemed "excessive". If the count of branches in a repository exceeds this number and bitmaps are enabled, "inactive" branches will have fewer bitmaps than "active" branches.
pack.bitmapInactiveBranchAgeInDays 90 Age in days that marks a branch as "inactive" for bitmap creation.
pack.bitmapRecentCommitCount 20000 Count at which to switch from bitmapRecentCommitSpan to bitmapDistantCommitSpan.
pack.bitmapRecentCommitSpan 100 Span of commits when building bitmaps for recent history.
pack.buildBitmaps true synonym for repack.writeBitmaps Whether index writer is allowed to build bitmaps for indexes.
pack.compression core.compression Compression level applied to objects in the pack.
pack.cutDeltaChains false Whether existing delta chains should be cut at {@link #getMaxDeltaDepth()
pack.deltaCacheLimit 100 Maximum size in bytes of a delta to cache.
pack.deltaCacheSize 52428800 (50 MiB) Size of the in-memory delta cache.
pack.deltaCompression true Whether the writer will create new deltas on the fly. true if the pack writer will create a new delta when either pack.reuseDeltas is false, or no suitable delta is available for reuse.
pack.depth 50 Maximum depth of delta chain set up for the pack writer.
pack.indexVersion 2 Pack index file format version.
pack.minSizePreventRacyPack 104857600 (100 MiB) Minimum packfile size for which we wait before opening a newly written pack to prevent its lastModified timestamp could be racy if pack.waitPreventRacyPack is true.
pack.preserveOldPacks false Whether to preserve old packs in a preserved directory.
prunePreserved, only via API of PackConfig false Whether to remove preserved pack files in a preserved directory.
pack.reuseDeltas true Whether to reuse deltas existing in repository.
pack.reuseObjects true Whether to reuse existing objects representation in repository.
pack.singlePack false Whether all of refs/* should be packed in a single pack.
pack.threads 0 (auto-detect number of processors) Number of threads to use for delta compression.
pack.waitPreventRacyPack false Whether we wait before opening a newly written pack to prevent its lastModified timestamp could be racy.
pack.window 10 Number of objects to try when looking for a delta base per thread searching for deltas.
pack.windowMemory 0 (unlimited) Maximum number of bytes to put into the delta search window.