49 lines
1.1 KiB
Go
Executable File
49 lines
1.1 KiB
Go
Executable File
package taskcenter
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import (
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tcmodel "bindbox-game/internal/repository/mysql/task_center"
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"context"
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"encoding/json"
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"time"
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"gorm.io/gorm"
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)
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const activeTasksCacheKey = "task_center:active_tasks"
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func (s *service) invalidateCache(ctx context.Context) error {
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if s.redis == nil {
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return nil
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}
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return s.redis.Del(ctx, activeTasksCacheKey).Err()
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}
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func (s *service) getActiveTasks(ctx context.Context) ([]tcmodel.Task, error) {
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// 1. Try Redis
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if s.redis != nil {
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val, err := s.redis.Get(ctx, activeTasksCacheKey).Result()
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if err == nil {
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var tasks []tcmodel.Task
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if err := json.Unmarshal([]byte(val), &tasks); err == nil {
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return tasks, nil
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}
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}
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}
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// 2. Fallback to DB
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var tasks []tcmodel.Task
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if err := s.repo.GetDbR().Preload("Tiers", func(db *gorm.DB) *gorm.DB {
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return db.Order("priority asc, id asc")
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}).Preload("Rewards").Where("status=1").Find(&tasks).Error; err != nil {
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return nil, err
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}
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// 3. Write back to Redis
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if s.redis != nil && len(tasks) > 0 {
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b, _ := json.Marshal(tasks)
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_ = s.redis.Set(ctx, activeTasksCacheKey, string(b), 1*time.Hour).Err()
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}
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return tasks, nil
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}
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