PulseAugur
EN
LIVE 19:57:59

Claude Code hook optimized with 60-second cache to reduce latency

By PulseAugur Editorial · [1 sources] ·

A developer has optimized a hook script for Claude Code, named `cost_guard.sh`, which previously caused significant latency due to its synchronous execution and the high startup cost of the `ccusage` Node.js CLI. The hook, designed to monitor token count and burn rate, was taking up to five seconds to complete on average. The solution implemented a 60-second Time-To-Live (TTL) cache, storing the results in a temporary file. This cache ensures that the `ccusage` command is only executed once per minute, drastically reducing turn latency for most prompts. The developer emphasizes the importance of caching the "normal" case (no warning) as well as exceptions to ensure the most frequent path is the fastest. AI

IMPACT Reduces latency for users interacting with AI models via custom scripts, improving the user experience.

RANK_REASON Developer blog post detailing a technical optimization for a specific tool/script.

Read on dev.to — Claude Code tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Claude Code hook optimized with 60-second cache to reduce latency

How we ranked this

Signal score
0 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Tool
Developer blog post detailing a technical optimization for a specific tool/script.
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
product, infra
Editorial topic classification. Feeds into how the story surfaces on /topic/<slug> hub pages and into the per-entity coverage mix.
AI-industry relevance
High
Clearly on-topic for AI-industry coverage.
Story freshness
69 days old
Aged out of breaking-news scoring windows; ranking reflects the durable signal from the full source set.

Full methodology in our editorial standards.

COVERAGE [1]

  1. dev.to — Claude Code tag TIER_1 English(EN) · Lily ·

    Speeding Up a UserPromptSubmit Hook with a 60-Second Cache: Designing cost_guard.sh

    <p>In my previous post, "<a href="https://zenn.dev/bokuwalily/articles/hook-script-macos-traps" rel="noopener noreferrer">Writing hook scripts without stepping on macOS traps</a>", I covered the basics of writing hooks. This time, the topic is speed.</p> <p>A UserPromptSubmit hoo…

RELATED ENTITIES

RELATED TOPICS