662e07d17a
HMAC-SHA256 calls SHA256() twice which is very expensive. Therefore,
this commit uses Poly1305-AES instead of HMAC-SHA256.
benchcmp:
benchmark old ns/op new ns/op delta
BenchmarkChunkEncrypt 261033772 195114818 -25.25%
BenchmarkChunkEncryptParallel 260973195 195787368 -24.98%
BenchmarkArchiveDirectory 1050500651 1002615884 -4.56%
BenchmarkPreload 23544286 24994508 +6.16%
BenchmarkLoadTree 350065 427665 +22.17%
BenchmarkEncryptWriter 87789753 31069126 -64.61%
BenchmarkEncrypt 88283197 38259043 -56.66%
BenchmarkDecryptReader 90478843 40714818 -55.00%
BenchmarkEncryptDecryptReader 179917626 81231730 -54.85%
BenchmarkDecrypt 87871591 37784207 -57.00%
BenchmarkSaveJSON 52481 56861 +8.35%
BenchmarkSaveFrom 75404085 51108596 -32.22%
BenchmarkLoadJSONID 90545437 82696805 -8.67%
benchmark old MB/s new MB/s speedup
BenchmarkChunkEncrypt 40.17 53.74 1.34x
BenchmarkChunkEncryptParallel 40.18 53.56 1.33x
BenchmarkEncryptWriter 95.55 270.00 2.83x
BenchmarkEncrypt 95.02 219.26 2.31x
BenchmarkDecryptReader 92.71 206.03 2.22x
BenchmarkEncryptDecryptReader 46.62 103.27 2.22x
BenchmarkDecrypt 95.46 222.01 2.33x
BenchmarkSaveFrom 55.62 82.07 1.48x
benchmark old allocs new allocs delta
BenchmarkChunkEncrypt 112 110 -1.79%
BenchmarkChunkEncryptParallel 103 100 -2.91%
BenchmarkArchiveDirectory 383704 392083 +2.18%
BenchmarkPreload 21765 21874 +0.50%
BenchmarkLoadTree 341 436 +27.86%
BenchmarkEncryptWriter 20 17 -15.00%
BenchmarkEncrypt 14 13 -7.14%
BenchmarkDecryptReader 18 15 -16.67%
BenchmarkEncryptDecryptReader 46 39 -15.22%
BenchmarkDecrypt 16 12 -25.00%
BenchmarkSaveJSON 81 86 +6.17%
BenchmarkSaveFrom 117 121 +3.42%
BenchmarkLoadJSONID 80525 80264 -0.32%
benchmark old bytes new bytes delta
BenchmarkChunkEncrypt 118956 64697 -45.61%
BenchmarkChunkEncryptParallel 118972 64681 -45.63%
BenchmarkArchiveDirectory 160236600 177498232 +10.77%
BenchmarkPreload 2772488 3302992 +19.13%
BenchmarkLoadTree 49102 46484 -5.33%
BenchmarkEncryptWriter 28927 8388146 +28897.64%
BenchmarkEncrypt 2473 1950 -21.15%
BenchmarkDecryptReader 527827 2774 -99.47%
BenchmarkEncryptDecryptReader 4100875 1528036 -62.74%
BenchmarkDecrypt 2509 2154 -14.15%
BenchmarkSaveJSON 4971 5892 +18.53%
BenchmarkSaveFrom 40117 31742 -20.88%
BenchmarkLoadJSONID 9444217 9442106 -0.02%
This closes #102.
|
||
|---|---|---|
| backend | ||
| chunker | ||
| cmd | ||
| debug | ||
| doc | ||
| pipe | ||
| testsuite | ||
| .travis.yml | ||
| archiver.go | ||
| archiver_int_test.go | ||
| archiver_test.go | ||
| blob.go | ||
| cache.go | ||
| cache_darwin.go | ||
| cache_linux.go | ||
| cache_test.go | ||
| crypto.go | ||
| crypto_int_test.go | ||
| crypto_test.go | ||
| generic_test.go | ||
| key.go | ||
| key_test.go | ||
| LICENSE | ||
| Makefile | ||
| map.go | ||
| map_test.go | ||
| node.go | ||
| node_darwin.go | ||
| node_linux.go | ||
| node_windows.go | ||
| pools.go | ||
| progress.go | ||
| README.md | ||
| restorer.go | ||
| server.go | ||
| server_test.go | ||
| snapshot.go | ||
| snapshot_darwin.go | ||
| snapshot_linux.go | ||
| snapshot_test.go | ||
| snapshot_windows.go | ||
| testsuite.sh | ||
| tree.go | ||
| tree_test.go | ||
| walk.go | ||
| walk_test.go | ||
| zerrors_linux.go | ||
WARNING
WARNING: At the moment, consider restic as alpha quality software, it is not yet finished. Do not use it for real data!
Restic
Restic is a program that does backups right. The design goals are:
-
Easy: Doing backups should be a frictionless process, otherwise you are tempted to skip it. Restic should be easy to configure and use, so that in the unlikely event of a data loss you can just restore it. Likewise, restoring data should not be complicated.
-
Fast: Backing up your data with restic should only be limited by your network or harddisk bandwidth so that you can backup your files every day. Nobody does backups if it takes too much time. Restoring backups should only transfer data that is needed for the files that are to be restored, so that this process is also fast.
-
Verifiable: Much more important than backup is restore, so restic enables you to easily verify that all data can be restored.
-
Secure: Restic uses cryptography to guarantee confidentiality and integrity of your data. The location the backup data is stored is assumed not to be a trusted environment (e.g. a shared space where others like system administrators are able to access your backups). Restic is built to secure your data against such attackers.
-
Efficient: With the growth of data, additional snapshots should only take the storage of the actual increment. Even more, duplicate data should be de-duplicated before it is actually written to the storage backend to save precious backup space.
Building
Install Go (at least 1.3), then run:
export GOPATH=~/src/go
go get github.com/restic/restic/cmd/restic
$GOPATH/bin/restic --help
Contribute
Contributions are welcome! Please make sure that all code submitted in
pull-requests is properly formatted with gofmt. Installing the script
fmt-check from https://github.com/edsrzf/gofmt-git-hook locally as a
pre-commit hook checks formatting before commiting, just copy this script to
.git/hooks/pre-commit.
If you are unsure what to do, please have a look at the github issues, especially those tagged minor complexity.
Contact
If you discover a bug or find something surprising, please feel free to open a github issue. If you would like to chat about restic, there is also the IRC channel #restic on irc.freenode.net. Or just write me an email :)
License
Restic is licensed under "BSD 2-Clause License". You can find the complete text
in the file LICENSE.