Catalyst Cache — in-memory key-value store with TTL for ephemeral session and temporary data. Trigger on 'Cache', 'cache segment', 'cache key', 'TTL', 'segment.put', 'segment.get', or 'temporary data Catalyst'.
Installs into .claude/skills of the current project.
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---
name: catalyst-cache
description: "Catalyst Cache — in-memory key-value store with TTL for ephemeral session and temporary data. Trigger on 'Cache', 'cache segment', 'cache key', 'TTL', 'segment.put', 'segment.get', or 'temporary data Catalyst'."
metadata:
version: "2.1.0"
---
## How It Works
> **Before any MCP call, establish context once per session** via the workspace readiness gate: `../catalyst-basics/references/preflight.md`. It resolves and reconciles the org/project so `CatalystbyZoho_List_All_Segments` targets the right project.
1. **Get Segment ID** — Use MCP (`CatalystbyZoho_List_All_Segments`) if available; otherwise retrieve it from the console or `.catalystrc`.
2. **Load `references/cache-basics.md`** — for SDK operations, TTL limits (48 hr max), and the `segment.delete()` / `segment.update()` gotchas.
3. **String values only** — All cache values are strings. Always `JSON.stringify` before `put` and `JSON.parse` after `get`.
4. **TTL behavior** — `segment.update(key, value)` **without** an expiry argument resets the TTL to 48 hours (the max), *not* the key's original TTL. Always pass the TTL explicitly (in hours) to preserve it: `segment.update(key, value, ttlHours)`. `segment.delete()` returns `null` (not an error) if the key is missing.
## Triggers
Use this skill for: "Cache", "cache segment", "cache key", "cache value", "TTL", "in-memory store", `segment.get`, `segment.put`, `segment.delete`, "session data", "temporary data Catalyst", "cache vs Data Store", or "48-hour cache".
## References
| Reference | Load when the query is about… |
|-----------|-------------------------------|
| `references/cache-basics.md` | SDK operations (get, put, delete, update), Segment ID, 48hr TTL max, string-only values, segment.delete() null gotcha, segment.update() TTL gotcha |
