Module index 

On-disk index of cached assets (index.json).

The index is a plain JSON file persisted alongside the cache directory. It stores the metadata that must survive process restarts:

• Map of asset_id -> CachedAsset (filename, size, checksum, context, …)
• last_accessed timestamps used by the LRU rotator

Writes go through a temp file + rename for atomicity, so that a crash mid-write cannot leave a half-written index on disk.

Structs

AssetIndex

In-memory representation of the index.json file.

CachedAsset

A single cached asset as persisted in the index.

NewCachedAsset

Parameters accepted by CachedAsset::new.

Constants

INDEX_FILENAME

Filename of the on-disk index, relative to the cache root.

INDEX_VERSION

Current schema version — bumped when breaking changes are made.

Functions

now_ms

Current time as UNIX epoch milliseconds.