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173 lines
6.9 KiB
173 lines
6.9 KiB
2 years ago
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# Changelog
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All notable changes to this project will be documented in this file.
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The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
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and this project will adhere to [Semantic Versioning](http://semver.org/spec/v2.0.0.html) starting v1.0.0.
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## Unreleased
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## [0.1.0] - 2021-06-03
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[0.1.0]: https://github.com/dgraph-io/ristretto/compare/v0.1.0..v0.0.3
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This release contains bug fixes and improvements to Ristretto. It also contains
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major updates to the z package. The z package contains types such as Tree (B+
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tree), Buffer, Mmap file, etc. All these types are used in Badger and Dgraph to
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improve performance and reduce memory requirements.
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### Changed
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- Make item public. Add a new onReject call for rejected items. (#180)
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### Added
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- Use z.Buffer backing for B+ tree (#268)
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- expose GetTTL function (#270)
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- docs(README): Ristretto is production-ready. (#267)
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- Add IterateKV (#265)
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- feat(super-flags): Add GetPath method in superflags (#258)
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- add GetDuration to SuperFlag (#248)
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- add Has, GetFloat64, and GetInt64 to SuperFlag (#247)
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- move SuperFlag to Ristretto (#246)
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- add SuperFlagHelp tool to generate flag help text (#251)
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- allow empty defaults in SuperFlag (#254)
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- add mmaped b+ tree (#207)
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- Add API to allow the MaxCost of an existing cache to be updated. (#200)
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- Add OnExit handler which can be used for manual memory management (#183)
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- Add life expectancy histogram (#182)
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- Add mechanism to wait for items to be processed. (#184)
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### Fixed
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- change expiration type from int64 to time.Time (#277)
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- fix(buffer): make buffer capacity atleast defaultCapacity (#273)
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- Fixes for z.PersistentTree (#272)
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- Initialize persistent tree correctly (#271)
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- use xxhash v2 (#266)
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- update comments to correctly reflect counter space usage (#189)
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- enable riscv64 builds (#264)
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- Switch from log to glog (#263)
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- Use Fibonacci for latency numbers
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- cache: fix race when clearning a cache (#261)
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- Check for keys without values in superflags (#259)
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- chore(perf): using tags instead of runtime callers to improve the performance of leak detection (#255)
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- fix(Flags): panic on user errors (#256)
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- fix SuperFlagHelp newline (#252)
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- fix(arm): Fix crashing under ARMv6 due to memory mis-alignment (#239)
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- Fix incorrect unit test coverage depiction (#245)
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- chore(histogram): adding percentile in histogram (#241)
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- fix(windows): use filepath instead of path (#244)
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- fix(MmapFile): Close the fd before deleting the file (#242)
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- Fixes CGO_ENABLED=0 compilation error (#240)
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- fix(build): fix build on non-amd64 architectures (#238)
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- fix(b+tree): Do not double the size of btree (#237)
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- fix(jemalloc): Fix the stats of jemalloc (#236)
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- Don't print stuff, only return strings.
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- Bring memclrNoHeapPointers to z (#235)
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- increase number of buffers from 32 to 64 in allocator (#234)
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- Set minSize to 1MB.
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- Opt(btree): Use Go memory instead of mmap files
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- Opt(btree): Lightweight stats calculation
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- Put padding internally to z.Buffer
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- Chore(z): Add SetTmpDir API to set the temp directory (#233)
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- Add a BufferFrom
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- Bring z.Allocator and z.AllocatorPool back
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- Fix(z.Allocator): Make Allocator use Go memory
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- Updated ZeroOut to use a simple for loop. (#231)
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- Add concurrency back
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- Add a test to check concurrency of Allocator.
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- Fix(buffer): Expose padding by z.Buffer's APIs and fix test (#222)
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- AllocateSlice should Truncate if the file is not big enough (#226)
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- Zero out allocations for structs now that we're reusing Allocators.
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- Fix the ristretto substring
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- Deal with nil z.AllocatorPool
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- Create an AllocatorPool class.
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- chore(btree): clean NewTree API (#225)
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- fix(MmapFile): Don't error out if fileSize > sz (#224)
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- feat(btree): allow option to reset btree and mmaping it to specified file. (#223)
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- Use mremap on Linux instead of munmap+mmap (#221)
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- Reuse pages in B+ tree (#220)
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- fix(allocator): make nil allocator return go byte slice (#217)
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- fix(buffer): Make padding internal to z.buffer (#216)
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- chore(buffer): add a parent directory field in z.Buffer (#215)
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- Make Allocator concurrent
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- Fix infinite loop in allocator (#214)
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- Add trim func
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- Use allocator pool. Turn off freelist.
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- Add freelists to Allocator to reuse.
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- make DeleteBelow delete values that are less than lo (#211)
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- Avoid an unnecessary Load procedure in IncrementOffset.
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- Add Stats method in Btree.
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- chore(script): fix local test script (#210)
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- fix(btree): Increase buffer size if needed. (#209)
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- chore(btree): add occupancy ratio, search benchmark and compact bug fix (#208)
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- Add licenses, remove prints, and fix a bug in compact
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- Add IncrementOffset API for z.buffers (#206)
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- Show count when printing histogram (#201)
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- Zbuffer: Add LenNoPadding and make padding 8 bytes (#204)
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- Allocate Go memory in case allocator is nil.
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- Add leak detection via leak build flag and fix a leak during cache.Close.
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- Add some APIs for allocator and buffer
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- Sync before truncation or close.
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- Handle nil MmapFile for Sync.
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- Public methods must not panic after Close() (#202)
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- Check for RD_ONLY correctly.
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- Modify MmapFile APIs
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- Add a bunch of APIs around MmapFile
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- Move APIs for mmapfile creation over to z package.
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- Add ZeroOut func
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- Add SliceOffsets
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- z: Add TotalSize method on bloom filter (#197)
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- Add Msync func
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- Buffer: Use 256 GB mmap size instead of MaxInt64 (#198)
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- Add a simple test to check next2Pow
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- Improve memory performance (#195)
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- Have a way to automatically mmap a growing buffer (#196)
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- Introduce Mmapped buffers and Merge Sort (#194)
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- Add a way to access an allocator via reference.
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- Use jemalloc.a to ensure compilation with the Go binary
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- Fix up a build issue with ReadMemStats
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- Add ReadMemStats function (#193)
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- Allocator helps allocate memory to be used by unsafe structs (#192)
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- Improve histogram output
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- Move Closer from y to z (#191)
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- Add histogram.Mean() method (#188)
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- Introduce Calloc: Manual Memory Management via jemalloc (#186)
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## [0.0.3] - 2020-07-06
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[0.0.3]: https://github.com/dgraph-io/ristretto/compare/v0.0.2..v0.0.3
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### Changed
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### Added
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### Fixed
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- z: use MemHashString and xxhash.Sum64String ([#153][])
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- Check conflict key before updating expiration map. ([#154][])
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- Fix race condition in Cache.Clear ([#133][])
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- Improve handling of updated items ([#168][])
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- Fix droppedSets count while updating the item ([#171][])
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## [0.0.2] - 2020-02-24
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[0.0.2]: https://github.com/dgraph-io/ristretto/compare/v0.0.1..v0.0.2
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### Added
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- Sets with TTL. ([#122][])
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### Fixed
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- Fix the way metrics are handled for deletions. ([#111][])
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- Support nil `*Cache` values in `Clear` and `Close`. ([#119][])
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- Delete item immediately. ([#113][])
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- Remove key from policy after TTL eviction. ([#130][])
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[#111]: https://github.com/dgraph-io/ristretto/issues/111
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[#113]: https://github.com/dgraph-io/ristretto/issues/113
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[#119]: https://github.com/dgraph-io/ristretto/issues/119
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[#122]: https://github.com/dgraph-io/ristretto/issues/122
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[#130]: https://github.com/dgraph-io/ristretto/issues/130
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## 0.0.1
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First release. Basic cache functionality based on a LFU policy.
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