sneak
3963ec31c1
Red phase for #51: covers strict cache_max_bytes parsing (invalid explicit values abort naming key and value), the computed default of max(75% of free space, 500 MiB) via an injectable free-space probe, explicit-value-no-floor, zero-disables-cache, size accounting over source blobs and variants, LRU eviction under the limit, the multi-referenced blob case, write-pressure and periodic eviction triggers, and startup reconciliation. Minimal API skeletons keep the tree compiling and lint-clean; only the new tests fail.
42 lines
1.5 KiB
Go
42 lines
1.5 KiB
Go
package imgcache
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import (
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"context"
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"time"
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)
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// DefaultEvictionInterval is how often the background evictor checks
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// cache usage against the configured limit, in addition to the
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// write-pressure wakeups triggered by stores.
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const DefaultEvictionInterval = 5 * time.Minute
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// UsageBytes returns the total number of bytes of cache content
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// tracked in the database (source content blobs plus processed
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// variants). It never scans the cache directories.
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func (c *Cache) UsageBytes(_ context.Context) (int64, error) {
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// Red phase: implementation follows the failing tests.
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return 0, nil
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}
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// EvictToLimit evicts least-recently-used cache entries until total
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// tracked usage is at or below the configured MaxBytes limit. It is a
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// no-op when the cache is disabled (MaxBytes zero).
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func (c *Cache) EvictToLimit(_ context.Context) error {
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// Red phase: implementation follows the failing tests.
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return nil
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}
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// StartEviction launches the background eviction goroutine, which
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// reconciles the database accounting with the cache directories once
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// at startup and then evicts to the configured limit on the given
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// periodic interval and on write-pressure notifications.
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func (c *Cache) StartEviction(_ time.Duration) {
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// Red phase: implementation follows the failing tests.
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}
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// StopEviction stops the background eviction goroutine and waits for
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// it to exit. It is safe to call when eviction was never started.
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func (c *Cache) StopEviction() {
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// Red phase: implementation follows the failing tests.
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}
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