mARTin
d92a8c7210
- Added 'onDelete' and 'onNotes' support to TaskItem. - Implemented hover actions (Delete and Notes icons) for tasks. - Added Notes Modal for editing task markdown content. - Simplified navigation animation to remove blank flash (single-phase slide-in). - Fixed syntax error in updateTask function. - Updated styles for modal and task actions.
52 lines
1.3 KiB
Markdown
52 lines
1.3 KiB
Markdown
---
|
||
title: Dependency-Based Parallelization
|
||
impact: CRITICAL
|
||
impactDescription: 2-10× improvement
|
||
tags: async, parallelization, dependencies, better-all
|
||
---
|
||
|
||
## Dependency-Based Parallelization
|
||
|
||
For operations with partial dependencies, use `better-all` to maximize parallelism. It automatically starts each task at the earliest possible moment.
|
||
|
||
**Incorrect (profile waits for config unnecessarily):**
|
||
|
||
```typescript
|
||
const [user, config] = await Promise.all([
|
||
fetchUser(),
|
||
fetchConfig()
|
||
])
|
||
const profile = await fetchProfile(user.id)
|
||
```
|
||
|
||
**Correct (config and profile run in parallel):**
|
||
|
||
```typescript
|
||
import { all } from 'better-all'
|
||
|
||
const { user, config, profile } = await all({
|
||
async user() { return fetchUser() },
|
||
async config() { return fetchConfig() },
|
||
async profile() {
|
||
return fetchProfile((await this.$.user).id)
|
||
}
|
||
})
|
||
```
|
||
|
||
**Alternative without extra dependencies:**
|
||
|
||
We can also create all the promises first, and do `Promise.all()` at the end.
|
||
|
||
```typescript
|
||
const userPromise = fetchUser()
|
||
const profilePromise = userPromise.then(user => fetchProfile(user.id))
|
||
|
||
const [user, config, profile] = await Promise.all([
|
||
userPromise,
|
||
fetchConfig(),
|
||
profilePromise
|
||
])
|
||
```
|
||
|
||
Reference: [https://github.com/shuding/better-all](https://github.com/shuding/better-all)
|