Radix is a full-featured Redis client for Go. See the reference links above for documentation and general usage examples.
There are two major versions of radix being supported at the moment:
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v3 is the more mature version, and is still being actively supported at the moment.
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v4 is in beta, but is essentially stable. You can view the v4 CHANGELOG to see what changed between the two versions. The biggest selling point is that connection sharing (called "implicit pipelining" in v3) now works with Pipeline and EvalScript, plus many other performance and usability enhancements.
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Standard print-like API which supports all current and future redis commands.
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Support for using an io.Reader as a command argument and writing responses to an io.Writer, as well as marshaling/unmarshaling command arguments from structs.
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Connection pooling, which takes advantage of implicit pipelining to reduce system calls.
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Helpers for EVAL, SCAN, and manual pipelining.
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Support for pubsub, as well as persistent pubsub wherein if a connection is lost a new one transparently replaces it.
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Nearly all important types are interfaces, allowing for custom implementations of nearly anything.
Radix always aims to support the most recent two versions of go, and is likely to support others prior to those two.
Module-aware mode:
go get github.com/mediocregopher/radix/v3
// import github.com/mediocregopher/radix/v3
go get github.com/mediocregopher/radix/v4
// import github.com/mediocregopher/radix/v4
# requires a redis server running on 127.0.0.1:6379
go test github.com/mediocregopher/radix/v3
go test github.com/mediocregopher/radix/v4
(When reading these it should be noted that radixv4 has not been totally
optimized for performance. It still performs well compared to v3 and other
drivers and is quite usable, but there is some work left which can be done,
specifically around its Conn implementation.)
Benchmarks were run in as close to a "real" environment as possible. Two GCE
instances were booted up, one hosting the redis server with 2vCPUs, the other
running the benchmarks (found in the bench directory) with 16vCPUs.
The benchmarks test a variety of situations against many different redis drivers, and the results are very large. You can view them here. Below are some highlights (I've tried to be fair here):
For a typical workload, which is lots of concurrent commands with relatively small amounts of data, radix outperforms all tested drivers except redispipe:
BenchmarkDrivers/parallel/no_pipeline/small_kv/radixv4-64 17815254 2917 ns/op 199 B/op 6 allocs/op
BenchmarkDrivers/parallel/no_pipeline/small_kv/radixv3-64 16688293 3120 ns/op 109 B/op 4 allocs/op
BenchmarkDrivers/parallel/no_pipeline/small_kv/redigo-64 3504063 15092 ns/op 168 B/op 9 allocs/op
BenchmarkDrivers/parallel/no_pipeline/small_kv/redispipe_pause150us-64 31668576 1680 ns/op 217 B/op 11 allocs/op
BenchmarkDrivers/parallel/no_pipeline/small_kv/redispipe_pause0-64 31149280 1685 ns/op 218 B/op 11 allocs/op
BenchmarkDrivers/parallel/no_pipeline/small_kv/go-redis-64 3768988 14409 ns/op 411 B/op 13 allocs/op
The story is similar for pipelining commands concurrently (radixv3 doesn't do as well here, because it doesn't support connection sharing for pipeline commands):
BenchmarkDrivers/parallel/pipeline/small_kv/radixv4-64 24720337 2245 ns/op 508 B/op 13 allocs/op
BenchmarkDrivers/parallel/pipeline/small_kv/radixv3-64 6921868 7757 ns/op 165 B/op 7 allocs/op
BenchmarkDrivers/parallel/pipeline/small_kv/redigo-64 6738849 8080 ns/op 170 B/op 9 allocs/op
BenchmarkDrivers/parallel/pipeline/small_kv/redispipe_pause150us-64 44479539 1148 ns/op 316 B/op 12 allocs/op
BenchmarkDrivers/parallel/pipeline/small_kv/redispipe_pause0-64 45290868 1126 ns/op 315 B/op 12 allocs/op
BenchmarkDrivers/parallel/pipeline/small_kv/go-redis-64 6740984 7903 ns/op 475 B/op 15 allocs/op
For larger amounts of data being transferred the differences become less noticeable, but both radix versions come out on top:
BenchmarkDrivers/parallel/no_pipeline/large_kv/radixv4-64 2395707 22766 ns/op 12553 B/op 4 allocs/op
BenchmarkDrivers/parallel/no_pipeline/large_kv/radixv3-64 3150398 17087 ns/op 12745 B/op 4 allocs/op
BenchmarkDrivers/parallel/no_pipeline/large_kv/redigo-64 1593054 34038 ns/op 24742 B/op 9 allocs/op
BenchmarkDrivers/parallel/no_pipeline/large_kv/redispipe_pause150us-64 2105118 25085 ns/op 16962 B/op 11 allocs/op
BenchmarkDrivers/parallel/no_pipeline/large_kv/redispipe_pause0-64 2354427 24280 ns/op 17295 B/op 11 allocs/op
BenchmarkDrivers/parallel/no_pipeline/large_kv/go-redis-64 1519354 35745 ns/op 14033 B/op 14 allocs/op
All results above show the high-concurrency results (-cpu 64). Concurrencies
of 16 and 32 are also included in the results, but didn't show anything
different.
For serial workloads, which involve a single connection performing commands one after the other, radix is either as fast or within a couple % of the other drivers tested. This use-case is much less common, and so when tradeoffs have been made between parallel and serial performance radix has general leaned towards parallel.
Serial non-pipelined:
BenchmarkDrivers/serial/no_pipeline/small_kv/radixv4-16 346915 161493 ns/op 67 B/op 4 allocs/op
BenchmarkDrivers/serial/no_pipeline/small_kv/radixv3-16 428313 138011 ns/op 67 B/op 4 allocs/op
BenchmarkDrivers/serial/no_pipeline/small_kv/redigo-16 416103 134438 ns/op 134 B/op 8 allocs/op
BenchmarkDrivers/serial/no_pipeline/small_kv/redispipe_pause150us-16 86734 635637 ns/op 217 B/op 11 allocs/op
BenchmarkDrivers/serial/no_pipeline/small_kv/redispipe_pause0-16 340320 158732 ns/op 216 B/op 11 allocs/op
BenchmarkDrivers/serial/no_pipeline/small_kv/go-redis-16 429703 138854 ns/op 408 B/op 13 allocs/op
Serial pipelined:
BenchmarkDrivers/serial/pipeline/small_kv/radixv4-16 624417 82336 ns/op 83 B/op 5 allocs/op
BenchmarkDrivers/serial/pipeline/small_kv/radixv3-16 784947 68540 ns/op 163 B/op 7 allocs/op
BenchmarkDrivers/serial/pipeline/small_kv/redigo-16 770983 69976 ns/op 134 B/op 8 allocs/op
BenchmarkDrivers/serial/pipeline/small_kv/redispipe_pause150us-16 175623 320512 ns/op 312 B/op 12 allocs/op
BenchmarkDrivers/serial/pipeline/small_kv/redispipe_pause0-16 642673 82225 ns/op 312 B/op 12 allocs/op
BenchmarkDrivers/serial/pipeline/small_kv/go-redis-16 787364 72240 ns/op 472 B/op 15 allocs/op
Serial large values:
BenchmarkDrivers/serial/no_pipeline/large_kv/radixv4-16 253586 217600 ns/op 12521 B/op 4 allocs/op
BenchmarkDrivers/serial/no_pipeline/large_kv/radixv3-16 317356 179608 ns/op 12717 B/op 4 allocs/op
BenchmarkDrivers/serial/no_pipeline/large_kv/redigo-16 244226 231179 ns/op 24704 B/op 8 allocs/op
BenchmarkDrivers/serial/no_pipeline/large_kv/redispipe_pause150us-16 80174 674066 ns/op 13780 B/op 11 allocs/op
BenchmarkDrivers/serial/no_pipeline/large_kv/redispipe_pause0-16 251810 209890 ns/op 13778 B/op 11 allocs/op
BenchmarkDrivers/serial/no_pipeline/large_kv/go-redis-16 236379 225677 ns/op 13976 B/op 14 allocs/op
Unless otherwise noted, the source files are distributed under the MIT License found in the LICENSE.txt file.