Struct CachePersistence 

pub struct CachePersistence;

Cache persistence operations.

Implementations

impl CachePersistence

pub fn save(path: &Path, snapshot: &CacheSnapshot) -> Result<(), CacheError>

Save a cache snapshot to disk.

Creates parent directories if they don’t exist. Uses atomic write (write to temp file, then rename) to prevent corruption.

pub fn load( path: &Path, expected_toolchain: &str, ) -> Result<Option<CacheSnapshot>, CacheError>

Load a cache snapshot from disk.

Returns Ok(None) if the cache file doesn’t exist. Returns Err if the cache exists but is invalid or incompatible.

Arguments

• path - Path to the cache file
• expected_toolchain - Current toolchain version; cache is invalidated if different

pub fn load_unchecked(path: &Path) -> Result<Option<CacheSnapshot>, CacheError>

Load a cache snapshot without toolchain validation.

Use this when you want to inspect the cache or handle validation separately.

pub fn invalidate(path: &Path) -> Result<(), CacheError>

Delete the cache file if it exists.