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Gang Liao ba1f62ddfb Read from blob cache first when MultiGetBlob() (#10225)
Summary:
There is currently no caching mechanism for blobs, which is not ideal especially when the database resides on remote storage (where we cannot rely on the OS page cache). As part of this task, we would like to make it possible for the application to configure a blob cache.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/10225

Test Plan:
Add test cases for MultiGetBlob
In this task, we added the new API MultiGetBlob() for BlobSource.

This PR is a part of https://github.com/facebook/rocksdb/issues/10156

Reviewed By: ltamasi

Differential Revision: D37358364

Pulled By: gangliao

fbshipit-source-id: aff053a37615d96d768fb9aedde17da5618c7ae6
2022-06-23 13:52:00 -07:00
.circleci Adapt benchmark result script to new fields. (#10120) 2022-06-22 09:26:13 -07:00
.github/workflows Use released clang-format instead of the one from dev branch (#9646) 2022-03-01 10:51:38 -08:00
buckifier Use optimized folly DistributedMutex in LRUCache when available (#10179) 2022-06-17 13:08:45 -07:00
build_tools Adapt benchmark result script to new fields. (#10120) 2022-06-22 09:26:13 -07:00
cache Fix key size in cache_bench (#10234) 2022-06-23 11:26:50 -07:00
cmake gcc-11 and cmake related cleanup (#9286) 2021-12-17 17:04:35 -08:00
coverage Fix commit_prereq and other targets (#9797) 2022-04-04 09:58:18 -07:00
db Read from blob cache first when MultiGetBlob() (#10225) 2022-06-23 13:52:00 -07:00
db_stress_tool Dynamically changeable MemPurge option (#10011) 2022-06-23 09:42:18 -07:00
docs Bump nokogiri from 1.13.4 to 1.13.6 in /docs (#10019) 2022-05-20 11:00:15 -07:00
env Fix typo in comments and code (#10233) 2022-06-22 15:45:21 -07:00
examples Add a simple example of backup and restore (#10054) 2022-06-03 23:25:31 -07:00
file Fix typo in comments and code (#10233) 2022-06-22 15:45:21 -07:00
fuzz Fix compilation errors and add fuzzers to CircleCI (#9420) 2022-02-01 10:32:15 -08:00
include/rocksdb Dynamically changeable MemPurge option (#10011) 2022-06-23 09:42:18 -07:00
java Dynamically changeable MemPurge option (#10011) 2022-06-23 09:42:18 -07:00
logging Deflake unit test BackupEngineTest.Concurrency (#10069) 2022-05-31 09:36:32 -07:00
memory Fail DB::Open() if logger cannot be created (#9984) 2022-05-27 07:23:31 -07:00
memtable Rewrite memory-charging feature's option API (#9926) 2022-05-17 15:01:51 -07:00
microbench Fix overflow in ribbon_bench after #10184 (#10195) 2022-06-17 12:53:57 -07:00
monitoring Update stats to help users estimate MultiGet async IO impact (#10182) 2022-06-16 12:12:43 -07:00
options Dynamically changeable MemPurge option (#10011) 2022-06-23 09:42:18 -07:00
plugin Add initial CMake support to plugin (#9214) 2021-11-30 17:16:53 -08:00
port Fix typo in comments and code (#10233) 2022-06-22 15:45:21 -07:00
table Fix typo in comments and code (#10233) 2022-06-22 15:45:21 -07:00
test_util Fix a bug of not setting enforce_single_del_contracts (#10027) 2022-05-20 16:48:50 -07:00
third-party Meta-internal folly integration with F14FastMap (#9546) 2022-04-13 07:34:01 -07:00
tools Add the blob cache to the stress tests and the benchmarking tool (#10202) 2022-06-22 16:04:03 -07:00
trace_replay Use std::numeric_limits<> (#9954) 2022-05-05 13:08:21 -07:00
util Fix typo in comments and code (#10233) 2022-06-22 15:45:21 -07:00
utilities Expose the initial logger creation error (#10223) 2022-06-22 08:26:38 -07:00
.clang-format
.gitignore Snapshots with user-specified timestamps (#9879) 2022-06-10 16:07:03 -07:00
.lgtm.yml Create lgtm.yml for LGTM.com C/C++ analysis (#4058) 2018-06-26 12:43:04 -07:00
.travis.yml Fix remaining uses of "backupable" (#9792) 2022-04-05 09:52:33 -07:00
.watchmanconfig Added .watchmanconfig file to rocksdb repo (#5593) 2019-07-19 15:00:33 -07:00
AUTHORS Update RocksDB Authors File 2017-10-18 14:42:10 -07:00
CMakeLists.txt Read blob from blob cache if exists when GetBlob() (#10178) 2022-06-17 15:22:59 -07:00
CODE_OF_CONDUCT.md Adopt Contributor Covenant 2019-08-29 23:21:01 -07:00
common.mk Clean up variables for temporary directory (#9961) 2022-05-06 16:38:06 -07:00
CONTRIBUTING.md Add Code of Conduct 2017-12-05 18:42:35 -08:00
COPYING
crash_test.mk Clean up variables for temporary directory (#9961) 2022-05-06 16:38:06 -07:00
DEFAULT_OPTIONS_HISTORY.md Add Options::DisableExtraChecks, clarify force_consistency_checks (#9363) 2022-01-18 17:31:03 -08:00
DUMP_FORMAT.md
HISTORY.md Dynamically changeable MemPurge option (#10011) 2022-06-23 09:42:18 -07:00
INSTALL.md Update supported VS versions in INSTALL.md (#9823) 2022-04-13 13:03:40 -07:00
issue_template.md Add Google Group to Issue Template 2020-01-28 14:40:37 -08:00
LANGUAGE-BINDINGS.md Update branch name to "main" in README/LANGUAGE_BINDINGS (#8727) 2021-09-01 15:26:34 -07:00
LICENSE.Apache
LICENSE.leveldb
Makefile Read blob from blob cache if exists when GetBlob() (#10178) 2022-06-17 15:22:59 -07:00
PLUGINS.md Add pmem-rocksdb-plugin link in PLUGINs.md (#9934) 2022-05-12 22:02:28 -07:00
README.md README: De-list slack channel, list Google group (#9387) 2022-01-18 08:19:48 -08:00
rocksdb.pc.in build: fix pkg-config file generation (#9953) 2022-05-30 12:46:40 -07:00
ROCKSDB_LITE.md Fix remaining uses of "backupable" (#9792) 2022-04-05 09:52:33 -07:00
src.mk Read blob from blob cache if exists when GetBlob() (#10178) 2022-06-17 15:22:59 -07:00
TARGETS Read blob from blob cache if exists when GetBlob() (#10178) 2022-06-17 15:22:59 -07:00
thirdparty.inc Fix build jemalloc api (#5470) 2019-06-24 17:40:32 -07:00
USERS.md Add Solana's RocksDB use case in USERS.md (#9558) 2022-02-16 09:23:01 -08:00
Vagrantfile Adding CentOS 7 Vagrantfile & build script 2018-02-26 15:27:17 -08:00
WINDOWS_PORT.md Update branch name in WINDOWS_PORT.md (#8745) 2021-09-01 19:26:39 -07:00

RocksDB: A Persistent Key-Value Store for Flash and RAM Storage

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RocksDB is developed and maintained by Facebook Database Engineering Team. It is built on earlier work on LevelDB by Sanjay Ghemawat (sanjay@google.com) and Jeff Dean (jeff@google.com)

This code is a library that forms the core building block for a fast key-value server, especially suited for storing data on flash drives. It has a Log-Structured-Merge-Database (LSM) design with flexible tradeoffs between Write-Amplification-Factor (WAF), Read-Amplification-Factor (RAF) and Space-Amplification-Factor (SAF). It has multi-threaded compactions, making it especially suitable for storing multiple terabytes of data in a single database.

Start with example usage here: https://github.com/facebook/rocksdb/tree/main/examples

See the github wiki for more explanation.

The public interface is in include/. Callers should not include or rely on the details of any other header files in this package. Those internal APIs may be changed without warning.

Questions and discussions are welcome on the RocksDB Developers Public Facebook group and email list on Google Groups.

License

RocksDB is dual-licensed under both the GPLv2 (found in the COPYING file in the root directory) and Apache 2.0 License (found in the LICENSE.Apache file in the root directory). You may select, at your option, one of the above-listed licenses.