9d634dd5b6
Summary: PR 9929 adds a new CompactionFilter::Decision, i.e. kRemoveWithSingleDelete so that CompactionFilter can indicate to CompactionIterator that a PUT can only be removed with SD. However, how CompactionIterator handles such a key is implementation detail which should not be implied in the public API. In fact, such a PUT can just be dropped. This is an optimization which we will apply in the near future. Discussion thread: https://github.com/facebook/rocksdb/pull/9929#discussion_r863198964 Pull Request resolved: https://github.com/facebook/rocksdb/pull/9951 Test Plan: make check Reviewed By: ajkr Differential Revision: D36156590 Pulled By: riversand963 fbshipit-source-id: 7b7d01f47bba4cad7d9cca6ca52984f27f88b372 |
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| db | ||
| db_stress_tool | ||
| docs | ||
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| file | ||
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| java | ||
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| AUTHORS | ||
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| CODE_OF_CONDUCT.md | ||
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| COPYING | ||
| crash_test.mk | ||
| DEFAULT_OPTIONS_HISTORY.md | ||
| DUMP_FORMAT.md | ||
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| issue_template.md | ||
| LANGUAGE-BINDINGS.md | ||
| LICENSE.Apache | ||
| LICENSE.leveldb | ||
| Makefile | ||
| PLUGINS.md | ||
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| README.md | ||
| ROCKSDB_LITE.md | ||
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RocksDB: A Persistent Key-Value Store for Flash and RAM Storage
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.