DiskCache class

A simple key-value disk cache backed by individual JSON files.

Each entry occupies its own file, so a partial write or corruption can never affect other cached values. File names are derived from the SHA-256 hash of the entry key, which keeps arbitrary key strings safe for the filesystem.

Layout: ~/.pub_doctor/cache/<sha256>.json

File content format:

{ "_exp": <epoch_ms>, "_v": 1, "_data": { ... } }

Constructors

DiskCache({String? dir})

Creates a DiskCache rooted at dir.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

clearAll() → Future<void>

Deletes all cached entries by removing the cache directory entirely.

get(String key) → Future<Map<String, dynamic>?>

Retrieves the cached value for key, or null if it is missing, expired, or written by an incompatible schema version.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

set(String key, Map<String, dynamic> data, {Duration ttl = const Duration(hours: 24)}) → Future<void>

Writes data under key with the given ttl.

stats() → Future<({int bytes, int entries})>

Returns the number of cached entries and their total size in bytes.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited