Redis Day Keynote Salvatore Sanfillipo Redis Labs
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Redis' seventh birthday was recently celebrated with the community, several contributors and users. This is Salvatore's keynote as he kicked off Redis Day in Tel Aviv.
![N-dimensional range
queries
โข Already implemented as a Ruby library.
โข Uses bit to bit interpolation.
โข We want to add it as a native API.
โข NADD myindex 3 1.4 200.4 4321 element
โข NRANGE myindex [0 1] [10 20] (30 40]](https://image.slidesharecdn.com/01-keynote-redis-review-salvatore-sanfilippo-redis-labs-160330222400/85/Redis-Day-Keynote-Salvatore-Sanfillipo-Redis-Labs-37-320.jpg)
![DataEngConf SF16 - BYOMQ: Why We [re]Built IronMQ](https://cdn.slidesharecdn.com/ss_thumbnails/byomq-160414230807-thumbnail.jpg?width=560&fit=bounds)
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Redis Day Keynote Salvatore Sanfillipo Redis Labs
- 1. Redis, 7 years and more @antirez Redis Labs
- 2. 2009
- 3. โข EXPIRE โข Sets and Sorted Sets โข Non blocking replication โข AOF
- 4. 2010
- 5. โข Hash data type โข Virtual Memory project started โข Pub/Sub โข Redis Cluster project started โข VM abandoned, Diskstore project started (!)
- 6. 2011
- 7. โข More work to Redis Cluster (alpha at the time) โข IPv6 โข Lua scripting โข Diskstore abandoned. No new attempts.
- 8. 2012
- 9. โข Bit operations โข Special encodings for small values โข Sentinel V1 โข SCAN family commands
- 10. 2013
- 11. โข Keyspace events โข Replication PSYNC support โข CONFIG REWRITE โข Performance boosts โข Sentinel V2
- 12. 2014
- 13. โข Lexicographical ranges โข HyperLogLog โข Diskless replication โข New List type encoding introduced
- 14. 2015
- 15. โข I join RedisLabs !!! โข Redis 3.0 with Cluster released โข Geo indexing API โข Non blocking DEL and FLUSH commands โข Lua debugger
- 16. 2016
- 18. Whatโs new in 3.2
- 19. Lua new replication modes โข Now you can write script with side effects, random commands, โฆ โข Selective replication of certain commands to slaves.
- 20. Expires consistency โข Slave and Master now agree much better about what keys already expired. โข Expires are still up to the master, but the slave, for read operations, can show a sane behavior.
- 21. RDB improvements โข RDB has now auxiliary informations inside. โข Itโs faster to load since it resizes the hash table before loading the keys. โข Soโฆ no rehashing needed (is costly).
- 22. Geo commands โข 49 commits, 899 insertions, 1429 deletions. โข API simpli๏ฌed, JSON API removed entirely. โข An useless indirection layer removed. Geo indexing API taken from Ardb simpli๏ฌed & improved. โข Radius queries ๏ฌxed to really report items in range. โข Much faster (may be yet a lot fasterโฆ work needed)
- 23. Quicklists โข Idea initially conceived by Pieter & me, never implemented. โข Later we saw Twitter implementing it, but just the minimum they needed. โข Finally Matt Stancliff provided a good implementation. โข Sun He and I re๏ฌned the implementation and improved the on-disk serialization.
- 24. Quicklists
- 25. Improved ZADD โข NX, XX, CH, INCR. โข Better capabilities via options. โข Newcomers can ignore them. โข Complexity is disclosed incrementally. โข Commands list does not becomes huge. โข What about Markov Chains?
- 26. SPOP with count โข Ability to pop multiple items from set in a single call. โข Small change, but required some reworking of the replication code.
- 27. Lua debugger โข Writing complex scripts is no longer a nightmare.
- 28. Cluster improvements โข Rebalancing of the cluster. โข CLUSTER API improvements.
- 29. BITFIELD โข Arrays of counters โข Over๏ฌow handling
- 30. Lazy freeing of objects
- 31. Lazyfree basics โข It means: O(1) DEL synchronous work. โข Plus: O(N) DEL asynchronous work. โข The result: DEL is no longer blocking. โข API: UNLINK and ASYNC option for FLUSHDB and FLUSHALL.
- 32. Shared objects Set 1 Set 2 Outputโจ buffer
- 33. More stuff โข Better SDS library. โข More useful and polished crash reports. โข CLIENT REPLY to suppress replies for bulk inserts. โข DEBUG RESTART and CRASH-AND-RECOVERY. โข HSTRLEN command. โข Too many to show them all.
- 34. Ideas for the future
- 35. Threaded I/O โข Spawn N threads at startup. โข Each thread does multiplexing like now. โข Each client is pinned to a thread when connecting. โข We can ๏ฌnally scale write, read, multiplexing. โข Global Lock. Similar to memcached.
- 36. Threaded slow ops โข Client is executing SUNION foo bar. โข Block it (like in blocked.c). โข Lock the key in a lock hash table: no mutex per key! Single mutex for the lock hash table. โข Perform operation, including sending the output in the client output buffer, in a different thread. โข Unblock the client.
- 37. N-dimensional range queries โข Already implemented as a Ruby library. โข Uses bit to bit interpolation. โข We want to add it as a native API. โข NADD myindex 3 1.4 200.4 4321 element โข NRANGE myindex [0 1] [10 20] (30 40]
- 38. Bloom ๏ฌlters โข API is the thing that matters. โข I would love no parameters (like HyperLogLogs). โข Auto scaling, without false negatives. โข Alternatives to bloom ๏ฌlters with same semantics look promising compared to bloom ๏ฌlters.
- 39. The end ask me anything here or mentioning @antirez