Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add bugrabilge/bilge-development-kit --skill caching-patternsgit clone --depth 1 https://github.com/bugrabilge/bilge-development-kitWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/bugrabilge/bilge-development-kit/caching-patterns)<a href="https://agentmods.dev/skills/bugrabilge/bilge-development-kit/caching-patterns"><img src="https://agentmods.dev/badge/skills/bugrabilge/bilge-development-kit/caching-patterns.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00034 | $0.01830 |
| Opus 5 | $0.00017 | $0.00915 |
| Sonnet 5 | $0.00007 | $0.00366 |
| Haiku 4.5 | $0.00003 | $0.00183 |
Grade A, and why
caching-patterns scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 231 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Caching Patterns Skill
Comprehensive caching strategies for every layer of a web application.
Cache Decision Framework
Is the data expensive to compute/fetch?
|
+-- NO -> Don't cache (complexity not worth it)
|
+-- YES -> How often does it change?
|
+-- Never/rarely -> Long TTL (hours/days) + CDN
|
+-- Every few minutes -> Short TTL (30s-5min) + stale-while-revalidate
|
+-- Real-time -> Don't cache, or cache with instant invalidation
|
+-- Per-user -> Application cache (Redis) with user-scoped keys
Caching Layers
| Layer | What | TTL | Tools |
|---|---|---|---|
| Browser | Static assets, API responses | Hours-Years | Cache-Control headers |
| CDN | Static files, pages, API responses | Minutes-Days | Cloudflare, Vercel Edge |
| Application | Computed data, API results | Seconds-Hours | Redis, Upstash, in-memory |
| Database | Query results | Seconds-Minutes | Query cache, materialized views |
| Framework | Components, routes, data | Varies | Next.js cache, React Query |
Browser Caching (HTTP Cache Headers)
Cache-Control Directives
| Directive | Use Case | Example |
|---|---|---|
public, max-age=31536000, immutable |
Hashed static assets (JS, CSS, images) | app.a1b2c3.js |
public, max-age=0, must-revalidate |
HTML pages | index.html |
private, max-age=300 |
User-specific API responses | /api/me/profile |
no-store |
Sensitive data | /api/auth/session |
stale-while-revalidate=60 |
Fresh enough + fast | API responses |
Strategy by Content Type
| Content | Strategy | Why |
|---|---|---|
| JS/CSS (hashed) | immutable, max-age=1y |
Hash changes on update |
| Images (hashed) | immutable, max-age=1y |
Same as above |
| HTML | no-cache or max-age=0, must-revalidate |
Always check for updates |
| API (public) | max-age=60, stale-while-revalidate=300 |
Fresh enough |
| API (private) | private, max-age=0 or no-store |
User-specific or sensitive |
| Fonts | max-age=1y |
Rarely change |
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago First seen · 231 lines · 34 tokens per session scan A 8ffe2bc3842f
caching-patterns is a skill published in the GitHub repository bugrabilge/bilge-development-kit (10 stars, last pushed 4mo ago), licensed MIT. It adds 34 tokens to every session and 1,830 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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