feat: add memory cache

database/cache/memory.go

@@ -0,0 +1,155 @@
+package cache
+
+import (
+	"context"
+	"errors"
+	"time"
+
+	"github.com/dgraph-io/ristretto/v2"
+)
+
+var _ Cache = (*_mem)(nil)
+
+type _mem struct {
+	ctx   context.Context
+	cache *ristretto.Cache[string, []byte]
+}
+
+func newMemory(ctx context.Context, ins *ristretto.Cache[string, []byte]) Cache {
+	return &_mem{
+		ctx:   ctx,
+		cache: ins,
+	}
+}
+
+func (m *_mem) Client() any {
+	return m.cache
+}
+
+func (c *_mem) Close() {
+	c.cache.Close()
+}
+
+func (c *_mem) Del(ctx context.Context, keys ...string) error {
+	for _, key := range keys {
+		c.cache.Del(key)
+	}
+
+	return nil
+}
+
+func (c *_mem) Get(ctx context.Context, key string) ([]byte, error) {
+	val, ok := c.cache.Get(key)
+	if !ok {
+		return val, ErrorKeyNotFound
+	}
+
+	return val, nil
+}
+
+func (c *_mem) GetDel(ctx context.Context, key string) ([]byte, error) {
+	val, err := c.Get(ctx, key)
+	if err != nil {
+		return val, err
+	}
+
+	c.cache.Del(key)
+
+	return val, err
+}
+
+func (c *_mem) GetDelScan(ctx context.Context, key string) Scanner {
+	val, err := c.GetDel(ctx, key)
+	return newScan(val, err)
+}
+
+func (c *_mem) GetEx(ctx context.Context, key string, duration time.Duration) ([]byte, error) {
+	val, err := c.Get(ctx, key)
+	if err != nil {
+		return val, err
+	}
+
+	c.cache.SetWithTTL(key, val, 1, duration)
+
+	return val, err
+}
+
+func (m *_mem) GetExScan(ctx context.Context, key string, duration time.Duration) Scanner {
+	val, err := m.GetEx(ctx, key, duration)
+	return newScan(val, err)
+}
+
+func (m *_mem) GetScan(ctx context.Context, key string) Scanner {
+	val, err := m.Get(ctx, key)
+	return newScan(val, err)
+}
+
+func (m *_mem) Gets(ctx context.Context, keys ...string) ([][]byte, error) {
+	vals := make([][]byte, 0, len(keys))
+
+	for _, key := range keys {
+		val, err := m.Get(ctx, key)
+		if err != nil {
+			if errors.Is(err, ErrorKeyNotFound) {
+				continue
+			}
+
+			return vals, err
+		}
+
+		vals = append(vals, val)
+	}
+
+	if len(vals) != len(keys) {
+		return vals, ErrorKeyNotFound
+	}
+
+	return vals, nil
+}
+
+func (m *_mem) Set(ctx context.Context, key string, value any) error {
+	val, err := handleValue(value)
+	if err != nil {
+		return err
+	}
+
+	if ok := m.cache.Set(key, val, 1); !ok {
+		return ErrorStoreFailed
+	}
+
+	m.cache.Wait()
+
+	return nil
+}
+
+func (m *_mem) SetEx(ctx context.Context, key string, value any, duration time.Duration) error {
+	val, err := handleValue(value)
+	if err != nil {
+		return err
+	}
+
+	if ok := m.cache.SetWithTTL(key, val, 1, duration); !ok {
+		return ErrorStoreFailed
+	}
+
+	m.cache.Wait()
+
+	return nil
+}
+
+func (m *_mem) Sets(ctx context.Context, vm map[string]any) error {
+	for key, value := range vm {
+		val, err := handleValue(value)
+		if err != nil {
+			return err
+		}
+
+		if ok := m.cache.Set(key, val, 1); !ok {
+			return ErrorStoreFailed
+		}
+	}
+
+	m.cache.Wait()
+
+	return nil
+}