74 lines
1.7 KiB
Go
74 lines
1.7 KiB
Go
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package cache
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import (
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"context"
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"errors"
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"github.com/go-redis/redis/v8"
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"os"
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"time"
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)
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func newRedisCache() Manager {
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redisClient := redis.NewClient(&redis.Options{
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Addr: os.Getenv("REDIS_URL"),
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Username: os.Getenv("REDIS_USERNAME"),
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Password: os.Getenv("REDIS_PASSWORD"),
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})
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return &redisCache{redisClient}
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}
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type redisCache struct {
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client *redis.Client
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}
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func (r *redisCache) Set(key, value string, expiration time.Duration) error {
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ctx, cancel := context.WithTimeout(context.Background(), 1 * time.Second)
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defer cancel()
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return r.client.Set(ctx, key, value, expiration).Err()
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}
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func (r *redisCache) Get(key string) (string, error) {
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ctx, cancel := context.WithTimeout(context.Background(), 1 * time.Second)
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defer cancel()
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cacheValue := r.client.Get(ctx, key)
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return cacheValue.Val(), cacheValue.Err()
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}
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func (r *redisCache) Remove(key string) {
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ctx, cancel := context.WithTimeout(context.Background(), 1 * time.Second)
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defer cancel()
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r.client.Del(ctx, key)
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}
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func newInMemCache() Manager {
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return &inMemCache{make(map[string]inMemEntry)}
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}
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type inMemEntry struct {
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value string
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expiration time.Time
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}
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type inMemCache struct {
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entries map[string]inMemEntry
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}
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func (i *inMemCache) Set(key, value string, expiration time.Duration) error {
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i.entries[key] = inMemEntry{
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value: value,
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expiration: time.Now().Add(expiration),
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}
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return nil
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}
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func (i *inMemCache) Get(key string) (string, error) {
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if val, exists := i.entries[key]; exists {
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if val.expiration.Before(time.Now()) {
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delete(i.entries, key)
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} else {
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return val.value, nil
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}
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}
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return "", errors.New("no value for given key")
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}
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func (i *inMemCache) Remove(key string) {
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delete(i.entries, key)
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}
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