forked from rocicorp/replicache
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathreplicache.js
More file actions
294 lines (277 loc) · 7.24 KB
/
Copy pathreplicache.js
File metadata and controls
294 lines (277 loc) · 7.24 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
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
* @typedef {import('../out/replicache').ReadTransaction} ReadTransaction
* @typedef {import('../out/replicache').JSONValue} JSONValue
*/
/**
* @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: ${opts.indexes || 0}`})`,
group: 'replicache',
byteSize: opts.numKeys * valSize,
/**
* @param {Bencher} bencher
*/
async run(bencher) {
const rep = await makeRepWithPopulate();
if (!opts.clean) {
await rep.mutate.populate({
numKeys: opts.numKeys,
randomStrings: makeRandomStrings(opts.numKeys, valSize),
});
}
for (let i = 0; i < (opts.indexes || 0); i++) {
await rep.createIndex({
name: `idx${i}`,
jsonPointer: '',
});
}
const randomStrings = makeRandomStrings(opts.numKeys, valSize);
bencher.reset();
await rep.mutate.populate({numKeys: opts.numKeys, 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 makeRepWithPopulate();
await this.rep.mutate.populate({
numKeys: opts.numKeys,
randomStrings: makeRandomStrings(opts.numKeys, valSize),
});
},
async teardown() {
await this.rep.close();
},
async run(/** @type Bencher */ bench) {
let getCount = 0;
let hasCount = false;
await this.rep.query(async (/** @type ReadTransaction */ 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 makeRepWithPopulate();
await this.rep.mutate.populate({
numKeys: opts.numKeys,
randomStrings: makeRandomStrings(opts.numKeys, valSize),
});
},
async teardown() {
await this.rep.close();
},
async run() {
await this.rep.query(async (/** @type ReadTransaction} */ 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({
mutators: {
write: (/** @type WriteTransaction */ tx, /** @type number */ i) =>
tx.put('k', i % 10),
},
});
this.write = this.rep.mutate.write;
},
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 makeRepWithPopulate();
await rep.mutate.populate({
numKeys: opts.numKeys,
randomStrings: makeRandomStrings(opts.numKeys, valSize),
});
bencher.reset();
await rep.createIndex({
name: `idx`,
jsonPointer: '',
});
bencher.stop();
await rep.close();
},
};
}
/**
* @returns Benchmark
*/
export function benchmarkWriteReadRoundTrip() {
/** @type string */
let key;
/** @type number */
let value;
return {
name: 'roundtrip write/subscribe/get',
group: 'replicache',
rep: /** @type Replicache */ (/** @type unknown */ (null)),
async setup() {
this.rep = await makeRep({
mutators: {
write: (/** @type WriteTransaction */ tx) => tx.put(key, value),
},
});
},
async teardown() {
await this.rep.close();
},
/**
* @param {Bencher} bench
* @param {number} i
*/
async run(bench, i) {
key = `k${i}`;
value = i;
let {promise, resolve} = resolver();
const unsubscribe = this.rep.subscribe(
(/** @type ReadTransaction */ tx) => tx.get(key),
{
onData(/** @type JSONValue | undefined */ res) {
// `resolve` binding needs to be looked up on every iteration
resolve(res);
},
},
);
// onData is called once when calling subscribe
await promise;
// reset these.
({promise, resolve} = resolver());
await this.rep.mutate.write();
const res = await promise;
if (res !== value) {
throw new Error();
}
bench.stop();
unsubscribe();
},
};
}
/**
* @param {string} name
*/
function deleteDatabase(name) {
return new Promise((resolve, reject) => {
const req = indexedDB.deleteDatabase(name);
req.onsuccess = resolve;
req.onerror = req.onblocked = req.onupgradeneeded = reject;
});
}
let counter = 0;
async function makeRep(options = {}) {
const name = `bench${counter++}`;
await deleteDatabase(name);
return new Replicache({
name,
pullInterval: null,
...options,
});
}
async function makeRepWithPopulate() {
return makeRep({
mutators: {
populate: async (
/** @type WriteTransaction} */ tx,
/** @type {{numKeys: number, randomStrings: string[]}} */ {
numKeys,
randomStrings,
},
) => {
for (let i = 0; i < numKeys; i++) {
await tx.put(`key${i}`, randomStrings[i]);
}
},
},
});
}
/**
* @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};
}