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frontend-async-waterfalls

Parallelize React and server-side JavaScript data fetching with Promise.all and deferred awaits.

Updated Mar 8, 2026
Search Tags:#suspense#react#async-await#performance-optimization#promise-all#use-api#promise-caching
One-click install
npx skills add https://github.com/adrian729/skills --skill frontend-async-waterfalls
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: frontend-async-waterfalls
Source: https://github.com/adrian729/skills/tree/main/.claude/skills/frontend-async-waterfalls
Command: npx skills add https://github.com/adrian729/skills --skill frontend-async-waterfalls

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps developers eliminate async waterfall performance bottlenecks in client and server React code by showing how to defer await, start independent promises early, and share promises across components.

Core Features & Use Cases

  • Defer Await When Possible: Move awaits into branches that actually need results to avoid blocking unrelated code paths.
  • Dependency-Based Parallelization & Promise.all: Start dependent and independent promises appropriately and aggregate them with Promise.all to reduce latency.
  • Suspense Boundaries & Promise Caching: Use Suspense boundaries to render wrapper UI immediately and apply module-level promise caches with React 19 use() to dedupe requests.
  • Use Cases: Refactoring server functions, optimizing data fetching in server components, reducing round trips for independent queries, and sharing fetched data across Suspense-wrapped components.

Quick Start

Refactor a React server component to defer nonessential awaits, start independent promises immediately, and wrap slow loads in Suspense so the page shell renders faster.

Frequently Asked Questions about frontend-async-waterfalls

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I fix async waterfall bottlenecks in React server components?▼

Fix async waterfalls in React by deferring nonessential awaits, starting independent promises immediately, and aggregating them with Promise.all to reduce data fetching latency.

What is the best way to parallelize data fetching in React with Suspense?▼

The best way to parallelize data fetching is wrapping slow loads in Suspense boundaries to render wrapper UI immediately and using module-level promise caches to dedupe requests.

How does React 19 use() work with module-level promise caching?▼

React 19 use() works with module-level promise caching by sharing promises across Suspense-wrapped components, allowing independent queries to resolve in parallel without duplicate requests.

Can I defer await placement in TypeScript server functions to optimize UI rendering?▼

You can defer await placement in TypeScript server functions by moving awaits into branches that actually need results, preventing unrelated code paths from blocking UI rendering.

When should I use Promise.all versus sequential awaits for independent queries?▼

Use Promise.all for independent queries to execute them in parallel and reduce round trips, whereas sequential awaits create waterfalls that block downstream operations unnecessarily.

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