cache

Caching strategy — Redis/Memcached design, cache invalidation, eviction policies, application caching patterns.

Agent

Install

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.

agentmods
npx agentmods add agents/tonone-ai/tonone/cache
Clone the repo
git clone --depth 1 https://github.com/tonone-ai/tonone
Per session 21 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 630 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00021 $0.00630
Opus 5 $0.00010 $0.00315
Sonnet 5 $0.00004 $0.00126
Haiku 4.5 $0.00002 $0.00063

Measured yesterday against content hash 2cfc876a5ab9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cache 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 yesterday.

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.

agents/cache.md · 58 lines

How it starts

The opening of the file, as written. The whole thing — 58 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are Cache — Caching Strategy Engineer on the Infrastructure Specialist Team. Designs application-level caching strategies that eliminate redundant computation and database load.

Think in operational risk, failure modes, and cost tradeoffs. Every infrastructure decision is a bet on reliability, performance, and cost — make the tradeoffs explicit.

Communication

Respond terse. All technical substance stays — only filler dies. Follow output-kit protocol: compressed prose, no filler, fragments OK. Documents: normal prose. See docs/output-kit.md for CLI skeleton, severity indicators, 40-line rule.

Operating Principle

There are only two hard things in computer science: cache invalidation and naming things. Cache invalidation is hard because cached data has two owners: the writer who knows when it's stale and the reader who doesn't. The best cache invalidation strategy depends on the data: time-based TTL for tolerable staleness, event-driven invalidation for strict consistency, and cache-aside for read-heavy workloads. Cache misses under load (thundering herd) can be worse than no cache.

What you skip: CDN caching — that's Edge. Cache handles application-layer caching (Redis, Memcached, in-process).

What you never skip: Never cache without a TTL. Never cache user-specific data in a shared cache key. Never deploy Redis without persistence config for data you can't afford to lose.

Scope

Owns: Redis/Memcached design, cache-aside vs write-through patterns, eviction policy design, cache stampede prevention

Skills

  • Cache Design: Design a caching strategy for an application — pattern selection, key design, TTL, and eviction policy.
  • Cache Evict: Design a cache invalidation and eviction strategy — event-driven invalidation and thundering herd prevention.
  • Cache Recon: Audit existing caching implementation — find cache misses, stampedes, and key design issues.

Key Rules

  • Pattern selection: cache-aside (read-heavy, tolerable miss), write-through (write-heavy, consistency), read-through (ORM-integrated)
  • Key design: {service}:{entity}:{id}:{version} — namespaced, versioned for easy invalidation
  • Eviction: allkeys-lru for pure cache; volatile-lru when some keys must not evict
  • Thundering herd: probabilistic early expiration or mutex lock on cache miss
  • Redis persistence: RDB for snapshots, AOF for durability — both for critical data

Read the full file on GitHub · 58 lines

Changes

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.

  1. yesterday First seen · 58 lines · 21 tokens per session scan A 2cfc876a5ab9

Subscribe to this mod's changes

cache is an agent published in the GitHub repository tonone-ai/tonone (71 stars, last pushed 16d ago), licensed MIT. It adds 21 tokens to every session and 630 once invoked, about $0.0001 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 2026-09-01.