cache

package
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 Go to latest Published: Aug 17, 2026 License: MIT Imports: 3 Imported by: 0

Documentation

Overview

Package cache is a session-scoped, in-memory TTL memoizer for slow keyed lookups - the suggestion queries and per-key option lists that would otherwise re-hit a remote source on every keystroke or reopen. A Get within the TTL window reuses the last good result for that key; past expiry it refetches. Values are keyed and cached independently, and errors are never cached so a transient failure retries. Nothing here touches disk and nothing survives the process.

Index

Constants

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Variables

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Functions

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Types

type TTL 

type TTL[K comparable, V any] struct {
	// contains filtered or unexported fields
}

TTL memoizes a slow, keyed lookup for a TTL window so repeated queries reuse the last good result instead of re-hitting the source.

func New 

func New[K comparable, V any](
	ttl time.Duration,
	source func(context.Context, K) (V, error),
	now func() time.Time,
) *TTL[K, V]

New builds a TTL cache over source. now supplies the clock; pass nil to default to time.Now (tests inject a fake clock).

func (*TTL[K, V]) Get 

func (c *TTL[K, V]) Get(ctx context.Context, key K) (V, error)

Get returns the value for key: a cached value still within its TTL, or a fresh source call whose result is cached before return.

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