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588bca2020
Summary: Introducing RocksDBLite! Removes all the non-essential features and reduces the binary size. This effort should help our adoption on mobile. Binary size when compiling for IOS (`TARGET_OS=IOS m static_lib`) is down to 9MB from 15MB (without stripping) Test Plan: compiles :) Reviewers: dhruba, haobo, ljin, sdong, yhchiang Reviewed By: yhchiang CC: leveldb Differential Revision: https://reviews.facebook.net/D17835
21 lines
1,020 B
Markdown
21 lines
1,020 B
Markdown
# RocksDBLite
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RocksDBLite is a project focused on mobile use cases, which don't need a lot of fancy things we've built for server workloads and they are very sensitive to binary size. For that reason, we added a compile flag ROCKSDB_LITE that comments out a lot of the nonessential code and keeps the binary lean.
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Some examples of the features disabled by ROCKSDB_LITE:
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* compiled-in support for LDB tool
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* No backupable DB
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* No support for replication (which we provide in form of TrasactionalIterator)
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* No advanced monitoring tools
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* No special-purpose memtables that are highly optimized for specific use cases
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When adding a new big feature to RocksDB, please add ROCKSDB_LITE compile guard if:
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* Nobody from mobile really needs your feature,
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* Your feature is adding a lot of weight to the binary.
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Don't add ROCKSDB_LITE compile guard if:
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* It would introduce a lot of code complexity. Compile guards make code harder to read. It's a trade-off.
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* Your feature is not adding a lot of weight.
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If unsure, ask. :)
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