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Intro to Redis TimeSeries
Time series data records values indexed by time. RedisTimeSeries implements a time series database as a Redis module. It stores time-value samples and allows retrieving aggregate values within time ranges. Samples can be added with labels and retained for a set time. Values can be averaged, summed, or operated on within aggregation windows. RedisTimeSeries integrates with monitoring tools and caching to enable various use cases.
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Intro to Redis TimeSeries
- 1. Intro to RedisTimeSeries KyleDavis Head of Developer Advocacy, Redis Labs
- 2. What is TimeSeries Data? 2
- 3. • Data thatsimply has time as an index • Each recorded time numeric value. • Time + Value = Sample • Analyze using time-bounded ranges –Separate into time units –Example: Averages in each hour Time Series data is… 3
- 4. Common Examples ofTime Series Data 4
- 5. Redis and TimeSeries 5
- 6. • Member +Sort Order –ZADD mySortedSet 1559938522 1000 • Get by ranges, not much else • Duplicate Member Problem –ZADD mySortedSet 1559938522 1000 –ZADD mySortedSet 1559938524 1000 <- Upsert instead of insert –Hacky solution: • ZADD mySortedSet 1559938522 1000:<random value> • ZADD mySortedSet 1559938524 1000:<random value> It all started with sorted sets… 6
- 7. • Designed tosolve similar problems –Unified log –Messaging • Allows for auto-generated IDs, no duplicates, and per-sample field/value pairs –XADD myStream * myValue 1000 –XADD myStream * myValue 1000 anotherField hello • Get by ranges, not much else Then came Redis Streams 7
- 8. Modules API enablesadding additional commands & data types 8
- 9. RedisTimeSeries implements ana time series database as a module in Redis 9
- 10.
- 11. 00 00 0000 00 00 03 E800 00 00 00 5C FA C5 DD 11 PREVIOUSPOINTER NEXTPOINTER Timestamps Sample Values Timestamp: 1559938525 Value: 1000
- 12.
- 13. 13 Oldest Creating a TimeSeries Key TS.CREATE myTS
- 14. 14 Oldest Labels (Optional) TS.CREATE myTSLABELS plant cabbage-47 location greenhouse- 4 plant : cabbage-47, location : greenhouse-4 field value field value
- 15. 15 Retention (Optional) TS.CREATE myTSRETENTION 60 … 61 seconds old 50 seconds old 20 seconds old 58 · · · · 59 · · · · 60 · · · · 61
- 16.
- 17. 17 Oldest Adding Values TS.ADD myTS1559938526 1000
- 18. 18 Oldest Getting Values TS.RANGE myTS1559938522 1559939000 1) 1) (integer) 1559938526 2) "834" 2) 1) (integer) 1559938524 2) "1000"
- 19. 19 Oldest Getting Values TS.RANGE myTS1559938522 1559939000 AGGREGATION avg 30 1) 1) (integer) 1559938520 2) "917"
- 20. 20 0-10s ago 11-20s ago 21-30sago TS.CREATERULE myTS myTS2 AGGREGATION 30avgsumminmaxrangecountfirstlast myTS myTS2
- 21. What else canyou do with RedisTimeSeries? 21
- 22. • TS.INCRBY /TS.DECRBY for counting over time • TS.GET to grab the most recent sample • TS.ALTER to change your meta data • TS.MRANGE and TS.MGET to query across time series keys Additional Commands
- 23. • Use itwith Prometheus and Grafana for monitoring dashboards • Use it as part of Redis Edge in IoT situations • Cache your most used time series data in RedisTimeSeries Connect it with other parts of your infrastructure
- 24. • Go tohttp://redistimeseries.io/ to explore –Launch it using Docker –Build it yourself –Look at the commands • Checkout the GitHub Org: https://github.com/RedisTimeSeries Next Steps
- 25.
Editor's Notes
- #10 used in our own software