Files
OpenFlare/backend/core/contracts/cache.go
T
ryan 43dc97e48c refactor(layout): consolidate backend codebase into backend/ package and clean root directory
- Moved cmd/, core/, plugins/, pkg/, downstream/, and main.go into backend/ directory
- Batch updated all Go source files to import github.com/Rain-kl/Wavelet/backend/...
- Updated Makefile, scripts/swagger.sh, architecture guards, and platform skills
- Passed all quality gates (100% tests, 0 lint issues, clean build)
2026-08-28 12:56:02 +08:00

33 lines
1.2 KiB
Go

// Copyright 2026 Arctel.net
// SPDX-License-Identifier: Apache-2.0
// Package contracts defines unified service interfaces and DTOs for cross-plugin communication.
package contracts
import (
"context"
"errors"
"time"
)
// ErrCacheMiss is returned when an item is not found in the cache.
var ErrCacheMiss = errors.New("contracts/cache: key not found")
// CacheService defines the contract for multi-layer cache operations (RAM L1 + Redis L2 + Pub/Sub invalidation).
type CacheService interface {
// Get retrieves an item from cache into target. Returns ErrCacheMiss if not found.
Get(ctx context.Context, key string, target any) error
// Set stores an item into cache with a specified time-to-live duration.
Set(ctx context.Context, key string, value any, ttl time.Duration) error
// Delete evicts a key from local and remote cache tiers and broadcasts invalidation.
Delete(ctx context.Context, key string) error
// GetOrSet retrieves an item from cache, or calls loader to populate and return if missing.
GetOrSet(ctx context.Context, key string, target any, ttl time.Duration, loader func() (any, error)) error
// Invalidate is a semantic alias for Delete.
Invalidate(ctx context.Context, key string) error
}