Xingbo Wang
1f20db7a31
Summary: - Add a blog post explaining FIFO KV-ratio compaction for BlobDB-backed TTL workloads. - Describe why the existing FIFO intra-L0 picker can repeatedly compact small BlobDB SST files and how the new KV-ratio target plus tiered merging strategy works. - Add diagrams for the old picker behavior and the KV-ratio tiering flow, along with the required blog author metadata. ## Testing - `git diff --check upstream/main...HEAD` Pull Request resolved: https://github.com/facebook/rocksdb/pull/14871 Reviewed By: joshkang97 Differential Revision: D109243987 Pulled By: xingbowang fbshipit-source-id: 7ad07953f38c55c77ffb6510824ba8500db78c0e
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.