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google/leveldb

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LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.

27 mentions on Hacker News by 24 people: 2 stories, 25 comments · first 2015-02-23 · latest 2026-01-15

Mentions per year 27 mentions · busiest year 2021 (5)
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  1. …around its runtime and its memory allocator that means we can’t reuse an existing library. 1: https://github.com/google/leveldb 2: https://github.com/scylladb/seastar 3: https://github.com/redpanda-data/redpanda/pull/28351
    comment by rockwotj · 2025-11-09 · in Ask HN: What Are You Working On? (Nov 2025)
  2. …file systems, the database could become corrupted after a crash or power failure.[21]..." https://github.com/google/leveldb/issues?utf8=%E2%9C%93&q=co... https://bugs.chromium.org/p/chromium/issues/detail?id=261623…
    comment by belter · 2023-04-13 · in SQLite performance tuning: concurrent reads, multiple GBs and 100k SELECTs/s
  3. Google didnt, thus Chrome started replacing sqlite with https://github.com/google/leveldb
    comment by rasz · 2023-04-13 · in SQLite performance tuning: concurrent reads, multiple GBs and 100k SELECTs/s
  4. LevelDB by Jeff and Sanjay. https://github.com/google/leveldb
    comment by danielmarkbruce · 2022-09-11 · in Ask HN: What's the best source code you've read?
  5. leveldb https://github.com/google/leveldb
    comment by valdect · 2022-09-10 · in Ask HN: What's the best source code you've read?
  6. …https://etcd.io/docs/v3.4/learning/why/ https://riak.com/products/riak-kv/ https://rocksdb.org/ https://github.com/google/leveldb http://www.memcached.org/
    comment by twic · 2022-05-29 · in Warp: Lightweight Multi-Key Transactions for Key-Value Stores
  7. LevelDB: https://github.com/google/leveldb
    comment by diehunde · 2022-04-01 · in Ask HN: What are the best key-value self-hosted storage engines?
  8. +1000 https://github.com/google/leveldb Jeff Dean and Sanjay Ghemawat are amazing engineers and this code is (/was?) nice.
    comment by danielmarkbruce · 2022-03-21 · in Ask HN: Codebases with great, easy to read code?
  9. You seem to be describing leveldb: https://github.com/google/leveldb
    comment by Sammi · 2021-12-31 · in Consider SQLite
  10. …out redis's implementation: https://github.com/redis/redis/blob/unstable/src/t_zset.c Or leveldb's: https://github.com/google/leveldb/blob/master/db/skiplist.h
    comment by uyt · 2021-07-22 · in Binary Trees are optimal except when they’re not
  11. This is the "secret sauce" behind LevelDB: https://github.com/google/leveldb#performance
    comment by gravypod · 2021-06-21 · in What every programmer should know about SSDs
  12. …[2] hash-sharding means: piece[i] has all the keys where hash(key) % N = i. [3] https://github.com/google/leveldb/blob/master/doc/table_form... although they just say "formatted according to the code in block_builder.cc" instead of descri
    comment by scottlamb · 2021-05-03 · in Hosting SQLite databases on GitHub Pages or any static file hoster
  13. To avoid some confusion, this is only the "distributed" part. The actual store is handled by the https://github.com/google/leveldb library.
    comment by nucatus · 2021-01-05 · in A distributed key value store in under 1000 lines
  14. …authors are Jeff Dean and Sanjay Ghemawat, so you know it's going to be really well written. https://github.com/google/leveldb
    comment by MorganGallant · 2020-10-28 · in Ask HN: Good C++ code bases to read?
  15. …used C++ project, written by the same people who wrote core parts of Google Search 20 years ago: https://github.com/google/leveldb
    comment by chubot · 2020-03-12 · in Google Open Source Code Search
  16. Powered by LevelDB ( https://github.com/google/leveldb )
    comment by justjake · 2019-11-21 · in Show HN: EasyDB – A One-Click Ephemeral Database
  17. …like OS X's "no really, fsync" param [1], or Motorola shipping nobarrier on their phones. [2] [1] https://github.com/google/leveldb/issues/203#issuecomment-55... [2] http://taras.glek.net/post/Followup-on-Pixel-vs-Moto:fsync/
    comment by charleslmunger · 2019-05-29 · in A way to do atomic writes
  18. …I like leveldb (a key-value DB library) and re2 (a regex engine). Random files from each of them: https://github.com/google/leveldb/blob/master/table/table_bu... https://github.com/google/re2/blob/master/re2/nfa.cc
    comment by chubot · 2018-09-21 · in Ask HN: What open source project, in your opinion, has the highest code quality?
  19. I think the open-source equivalent of RecordIO is the leveldb log format: https://github.com/google/leveldb/blob/master/doc/log_format... https://github.com/google/leveldb/blob/master/db/log_reader....…
    comment by haberman · 2018-04-11 · in Prototool – A Swiss Army Knife for Protocol Buffers
  20. …of a single Bigtable tablet[2]. [0]: https://news.ycombinator.com/item?id=13854431 [1]: https://github.com/google/leveldb [2]: http://research.google.com/archive/bigtable.html , section 5.3
    comment by irfansharif · 2017-10-02 · in Interesting Codebases
  21. https://github.com/google/leveldb
    comment by pacala · 2017-07-09 · in Ask HN: Name good examples of Modern C++ usage
  22. …tiny codebase at that, used virtually everywhere and the basis for facebook/rocksdb[2]. [1]: https://github.com/google/leveldb [2]: https://github.com/facebook/rocksdb
    comment by irfansharif · 2017-03-13 · in Ask HN: What are some examples of good code?
  23. …reported against LevelDB, a database system developed at Google, was discovered using QuickCheck: https://github.com/google/leveldb/issues/50 . You can read more about it at http://htmlpreview.github.io/?https://raw.github.com/strange...
    comment by mavelikara · 2016-12-25 · in QuickCheck: A Lightweight Tool for Random Testing of Haskell Programs (2000) [pdf]
  24. Is LevelDB linked in this article related to leveldb developed at Google ( https://github.com/google/leveldb ) ?
    comment by vskr · 2015-04-12 · in Firefly – Full Text Search Engine for Dropbox
  25. …use LevelDB... we use the SSTables that underly LevelDB. Since we know we're write-once, we use https://github.com/google/leveldb/blob/master/include/leveld... directly for writes (and its Go equivalent for reads). I'm familiar with the…
    comment by kcudrevelc · 2015-02-23 · in Stenographer – A full-packet-capture utility