5721ea3c21
## Current Behavior
Running Nx in multiple processes at the same time with the daemon
disabled can cripple a system due to excess memory usage when creating
the graph. This is due to plugin workers being started per-parent
process when there is no daemon. This change enables a file lock to
prevent the simultaneous processing, and read from the cache when the
first run completes.
Currently, running `nx show projects` 30 times in parallel looks
something like this:
30 processes exited within 37535ms
## Expected Behavior
30 processes exited within 6435ms
## Test Script
```js
//@ts-check
const { spawn } = require('child_process');
let alive = new Set();
let start = Date.now();
let iterations = 30;
for (let i = 0; i < iterations; i++) {
const cp = spawn('npx nx show projects', [], {
shell: true,
env: {
...process.env,
NX_DAEMON: 'false',
NX_VERBOSE_LOGGING: 'true',
},
});
alive.add(i);
// cp.stdout.on('data', (data) => {
// console.log(`stdout [${i}]: ${data}`);
// });
cp.stderr.on('data', (data) => {
console.error(`stderr [${i}]: ${data}`);
});
cp.on('exit', (code) => {
console.log(`child process ${i} exited with code ${code}`);
alive.delete(i);
});
}
const i = setInterval(() => {
if (alive.size > 0) {
} else {
clearInterval(i);
console.log(
`${iterations} processes exited within ${Date.now() - start}ms`
);
}
}, 1);
```
145 lines
2.4 KiB
Markdown
145 lines
2.4 KiB
Markdown
# Class: StaleProjectGraphCacheError
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## Hierarchy
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- `Error`
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↳ **`StaleProjectGraphCacheError`**
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## Table of contents
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### Constructors
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- [constructor](../../devkit/documents/StaleProjectGraphCacheError#constructor)
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### Properties
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- [cause](../../devkit/documents/StaleProjectGraphCacheError#cause): unknown
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- [message](../../devkit/documents/StaleProjectGraphCacheError#message): string
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- [name](../../devkit/documents/StaleProjectGraphCacheError#name): string
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- [stack](../../devkit/documents/StaleProjectGraphCacheError#stack): string
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- [prepareStackTrace](../../devkit/documents/StaleProjectGraphCacheError#preparestacktrace): Function
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- [stackTraceLimit](../../devkit/documents/StaleProjectGraphCacheError#stacktracelimit): number
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### Methods
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- [captureStackTrace](../../devkit/documents/StaleProjectGraphCacheError#capturestacktrace)
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## Constructors
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### constructor
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• **new StaleProjectGraphCacheError**(): [`StaleProjectGraphCacheError`](../../devkit/documents/StaleProjectGraphCacheError)
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#### Returns
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[`StaleProjectGraphCacheError`](../../devkit/documents/StaleProjectGraphCacheError)
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#### Overrides
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Error.constructor
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## Properties
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### cause
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• `Optional` **cause**: `unknown`
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#### Inherited from
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Error.cause
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---
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### message
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• **message**: `string`
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#### Inherited from
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Error.message
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---
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### name
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• **name**: `string`
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#### Inherited from
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Error.name
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---
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### stack
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• `Optional` **stack**: `string`
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#### Inherited from
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Error.stack
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---
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### prepareStackTrace
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▪ `Static` `Optional` **prepareStackTrace**: (`err`: `Error`, `stackTraces`: `CallSite`[]) => `any`
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Optional override for formatting stack traces
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**`See`**
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https://v8.dev/docs/stack-trace-api#customizing-stack-traces
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#### Type declaration
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▸ (`err`, `stackTraces`): `any`
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##### Parameters
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| Name | Type |
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| :------------ | :----------- |
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| `err` | `Error` |
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| `stackTraces` | `CallSite`[] |
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##### Returns
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`any`
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#### Inherited from
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Error.prepareStackTrace
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---
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### stackTraceLimit
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▪ `Static` **stackTraceLimit**: `number`
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#### Inherited from
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Error.stackTraceLimit
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## Methods
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### captureStackTrace
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▸ **captureStackTrace**(`targetObject`, `constructorOpt?`): `void`
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Create .stack property on a target object
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#### Parameters
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| Name | Type |
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| :---------------- | :--------- |
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| `targetObject` | `object` |
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| `constructorOpt?` | `Function` |
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#### Returns
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`void`
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#### Inherited from
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Error.captureStackTrace
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