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iotcat
74338fbb93
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5 years ago | |
|---|---|---|
| .. | ||
| lib | 5 years ago | |
| .eslintrc | 5 years ago | |
| LICENSE | 5 years ago | |
| README.md | 5 years ago | |
| package.json | 5 years ago | |
README.md
Redis Key Slot Calculator
A high performance redis cluster key slot calculator for node redis clients e.g. node_redis, ioredis and redis-clustr.
This also handles key tags such as somekey{actualTag}.
Install
Install with NPM:
npm install cluster-key-slot --save
Usage
const calculateSlot = require('cluster-key-slot');
const calculateMultipleSlots = require('cluster-key-slot').generateMulti;
// ...
// a single slot number
const slot = calculateSlot('test:key:{butOnlyThis}redis');
// multiple keys - multi returns a single key slot number, returns -1 if any
// of the keys does not match the base slot number (base is defaulted to first keys slot)
// This is useful to quickly determine a singe slot for multi keys operations.
const slotForRedisMulti = calculateMultipleSlots([
'test:key:{butOnlyThis}redis',
'something:key45:{butOnlyThis}hello',
'example:key46:{butOnlyThis}foobar',
]);
Benchmarks
OLD in these benchmarks refers to the ioredis crc calc and many of the other calculators that use Buffer.
NEW tags x 472,156 ops/sec ±1.80% (90 runs sampled)
OLD tags x 413,725 ops/sec ±1.37% (93 runs sampled)
NEW without tags x 1,287,795 ops/sec ±2.06% (89 runs sampled)
OLD without tags x 633,340 ops/sec ±0.87% (93 runs sampled)
NEW without tags singular x 4,824,560 ops/sec ±1.71% (93 runs sampled)
OLD without tags singular x 2,981,057 ops/sec ±0.22% (96 runs sampled)