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Copy pathreplicache.js
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264 lines (247 loc) · 6.37 KB
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const valSize = 1024;
import {Replicache} from '../out/replicache.mjs';
import {makeRandomStrings} from './data.js';
/**
* @typedef {import('./perf').Benchmark} Benchmark
* @typedef {import('./perf').Bencher} Bencher
* @typedef {import('../out/replicache').WriteTransaction} WriteTransaction
*/
/**
* @param {{numKeys: number; clean: boolean; indexes?: number;}} opts
* @returns Benchmark
*/
export function benchmarkPopulate(opts) {
return {
name: `populate ${valSize}x${opts.numKeys} (${
opts.clean ? 'clean' : 'dirty'
}, ${`indexes: ${opts.indexes || 0}`})`,
group: 'replicache',
byteSize: opts.numKeys * valSize,
/**
* @param {Bencher} bencher
*/
async run(bencher) {
const rep = await makeRep();
if (!opts.clean) {
await populate(rep, opts, makeRandomStrings(opts.numKeys, valSize));
}
for (let i = 0; i < (opts.indexes || 0); i++) {
await rep.createIndex({
name: `idx${i}`,
jsonPointer: '',
});
}
const randomStrings = makeRandomStrings(opts.numKeys, valSize);
bencher.reset();
await populate(rep, opts, randomStrings);
bencher.stop();
await rep.close();
},
};
}
/**
* @param {{numKeys: number;}} opts
* @returns Benchmark
*/
export function benchmarkReadTransaction(opts) {
return {
name: `read tx ${valSize}x${opts.numKeys}`,
group: 'replicache',
byteSize: opts.numKeys * valSize,
rep: /** @type Replicache */ (/** @type unknown */ (null)),
async setup() {
this.rep = await makeRep();
await populate(this.rep, opts, makeRandomStrings(opts.numKeys, valSize));
},
async teardown() {
await this.rep.close();
},
async run(bench) {
let getCount = 0;
let hasCount = false;
await this.rep.query(async tx => {
for (let i = 0; i < opts.numKeys; i++) {
// use the values to be confident we're not optimizing away.
// @ts-ignore
getCount += (await tx.get(`key${i}`)).length;
// @ts-ignore
hasCount = (await tx.has(`key${i}`)) === true ? 1 : 0;
}
});
bench.stop();
console.log(getCount, hasCount);
},
};
}
/**
* @param {{numKeys: number;}} opts
* @returns Benchmark
*/
export function benchmarkScan(opts) {
return {
name: `scan ${valSize}x${opts.numKeys}`,
group: 'replicache',
byteSize: opts.numKeys * valSize,
rep: /** @type Replicache */ (/** @type unknown */ (null)),
async setup() {
this.rep = await makeRep();
await populate(this.rep, opts, makeRandomStrings(opts.numKeys, valSize));
},
async teardown() {
await this.rep.close();
},
async run() {
await this.rep.query(async tx => {
let count = 0;
for await (const value of tx.scan()) {
// use the value to be confident we're not optimizing away.
// @ts-ignore
count += value.length;
}
console.log(count);
});
},
};
}
/**
* @returns Benchmark
*/
export function benchmarkSingleByteWrite() {
return {
name: 'write single byte',
group: 'replicache',
byteSize: 1,
rep: /** @type Replicache */ (/** @type unknown */ (null)),
write: /** @type {(a: number) => Promise<void>} */ (
/** @type unknown */ (null)
),
async setup() {
this.rep = await makeRep();
this.write = this.rep.register('write', (
/** @type {WriteTransaction} */ tx,
/** @type {number} */ i,
) => tx.put('k', i % 10));
},
async teardown() {
await this.rep.close();
},
/**
* @param {Bencher} _
* @param {number} i
*/
async run(_, i) {
await this.write(i);
},
};
}
/**
* @param {{numKeys: number;}} opts
* @returns Benchmark
*/
export function benchmarkCreateIndex(opts) {
return {
name: `create index ${valSize}x${opts.numKeys}`,
group: 'replicache',
/**
* @param {Bencher} bencher
*/
async run(bencher) {
const rep = await makeRep();
await populate(rep, opts, makeRandomStrings(opts.numKeys, valSize));
bencher.reset();
await rep.createIndex({
name: `idx`,
jsonPointer: '',
});
bencher.stop();
await rep.close();
},
};
}
/**
* @returns Benchmark
*/
export function benchmarkWriteReadRoundTrip() {
return {
name: 'roundtrip write/subscribe/get',
group: 'replicache',
rep: /** @type Replicache */ (/** @type unknown */ (null)),
async setup() {
this.rep = await makeRep();
},
async teardown() {
await this.rep.close();
},
/**
* @param {Bencher} bench
* @param {number} i
*/
async run(bench, i) {
const key = `k${i}`;
const value = i;
let {promise, resolve} = resolver();
const unsubscribe = this.rep.subscribe(tx => tx.get(key), {
onData(res) {
// `resolve` binding needs to be looked up on every iteration
resolve(res);
},
});
// onData is called once when calling subscribe
await promise;
const write = this.rep.register('write', tx => tx.put(key, value));
bench.reset();
// reset these.
({promise, resolve} = resolver());
await write();
const res = await promise;
if (res !== value) {
throw new Error();
}
bench.stop();
unsubscribe();
},
};
}
/**
* @param {string} name
*/
function deleteDatabase(name) {
return new Promise((resolve, reject) => {
const req = indexedDB.deleteDatabase(name);
req.>
req. = req.>
});
}
let counter = 0;
async function makeRep() {
const name = `bench${counter++}`;
await deleteDatabase(name);
return new Replicache({
name,
pullInterval: null,
});
}
/**
* @param {Replicache} rep
* @param {{numKeys: number}}
* @param {string[]} randomStrings
*/
async function populate(rep, {numKeys}, randomStrings) {
const set = rep.register('populate', async tx => {
for (let i = 0; i < numKeys; i++) {
await tx.put(`key${i}`, randomStrings[i]);
}
});
await set();
}
/**
* @template R
* @returns {{promise: Promise<R>, resolve: (res: R) => void}}
*/
function resolver() {
let resolve = /** @type {(res: R) => void} */ (/** @type unknown */ (null));
const promise = new Promise(res => {
resolve = res;
});
return {promise, resolve};
}
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