Files
tyapi-server/internal/shared/database/cached_base_repository.go

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2025-07-20 20:53:26 +08:00
package database
import (
"context"
"fmt"
"time"
"go.uber.org/zap"
"gorm.io/gorm"
"tyapi-server/internal/shared/interfaces"
)
// CachedBaseRepositoryImpl 支持缓存的基础仓储实现
// 在BaseRepositoryImpl基础上增加智能缓存管理
type CachedBaseRepositoryImpl struct {
*BaseRepositoryImpl
tableName string
}
// NewCachedBaseRepositoryImpl 创建支持缓存的基础仓储实现
func NewCachedBaseRepositoryImpl(db *gorm.DB, logger *zap.Logger, tableName string) *CachedBaseRepositoryImpl {
return &CachedBaseRepositoryImpl{
BaseRepositoryImpl: NewBaseRepositoryImpl(db, logger),
tableName: tableName,
}
}
// ================ 智能缓存方法 ================
// GetWithCache 带缓存的单条查询
func (r *CachedBaseRepositoryImpl) GetWithCache(ctx context.Context, dest interface{}, ttl time.Duration, where string, args ...interface{}) error {
db := r.GetDB(ctx).
Set("cache:enabled", true).
Set("cache:ttl", ttl)
return db.Where(where, args...).First(dest).Error
}
// FindWithCache 带缓存的多条查询
func (r *CachedBaseRepositoryImpl) FindWithCache(ctx context.Context, dest interface{}, ttl time.Duration, where string, args ...interface{}) error {
db := r.GetDB(ctx).
Set("cache:enabled", true).
Set("cache:ttl", ttl)
return db.Where(where, args...).Find(dest).Error
}
// CountWithCache 带缓存的计数查询
func (r *CachedBaseRepositoryImpl) CountWithCache(ctx context.Context, count *int64, ttl time.Duration, entity interface{}, where string, args ...interface{}) error {
db := r.GetDB(ctx).
Set("cache:enabled", true).
Set("cache:ttl", ttl).
Model(entity)
return db.Where(where, args...).Count(count).Error
}
// ListWithCache 带缓存的列表查询
func (r *CachedBaseRepositoryImpl) ListWithCache(ctx context.Context, dest interface{}, ttl time.Duration, options CacheListOptions) error {
db := r.GetDB(ctx).
Set("cache:enabled", true).
Set("cache:ttl", ttl)
// 应用where条件
if options.Where != "" {
db = db.Where(options.Where, options.Args...)
}
// 应用预加载
for _, preload := range options.Preloads {
db = db.Preload(preload)
}
// 应用排序
if options.Order != "" {
db = db.Order(options.Order)
}
// 应用分页
if options.Limit > 0 {
db = db.Limit(options.Limit)
}
if options.Offset > 0 {
db = db.Offset(options.Offset)
}
return db.Find(dest).Error
}
// CacheListOptions 缓存列表查询选项
type CacheListOptions struct {
Where string `json:"where"`
Args []interface{} `json:"args"`
Order string `json:"order"`
Limit int `json:"limit"`
Offset int `json:"offset"`
Preloads []string `json:"preloads"`
}
// ================ 缓存控制方法 ================
// WithCache 启用缓存
func (r *CachedBaseRepositoryImpl) WithCache(ttl time.Duration) *CachedBaseRepositoryImpl {
// 创建新实例避免状态污染
return &CachedBaseRepositoryImpl{
BaseRepositoryImpl: &BaseRepositoryImpl{
db: r.db.Set("cache:enabled", true).Set("cache:ttl", ttl),
logger: r.logger,
},
tableName: r.tableName,
}
}
// WithoutCache 禁用缓存
func (r *CachedBaseRepositoryImpl) WithoutCache() *CachedBaseRepositoryImpl {
return &CachedBaseRepositoryImpl{
BaseRepositoryImpl: &BaseRepositoryImpl{
db: r.db.Set("cache:disabled", true),
logger: r.logger,
},
tableName: r.tableName,
}
}
// WithShortCache 短期缓存5分钟
func (r *CachedBaseRepositoryImpl) WithShortCache() *CachedBaseRepositoryImpl {
return r.WithCache(5 * time.Minute)
}
// WithMediumCache 中期缓存30分钟
func (r *CachedBaseRepositoryImpl) WithMediumCache() *CachedBaseRepositoryImpl {
return r.WithCache(30 * time.Minute)
}
// WithLongCache 长期缓存2小时
func (r *CachedBaseRepositoryImpl) WithLongCache() *CachedBaseRepositoryImpl {
return r.WithCache(2 * time.Hour)
}
// ================ 智能查询方法 ================
// SmartGetByID 智能ID查询自动缓存
func (r *CachedBaseRepositoryImpl) SmartGetByID(ctx context.Context, id string, dest interface{}) error {
return r.GetWithCache(ctx, dest, 30*time.Minute, "id = ?", id)
}
// SmartGetByField 智能字段查询(自动缓存)
func (r *CachedBaseRepositoryImpl) SmartGetByField(ctx context.Context, dest interface{}, field string, value interface{}, ttl ...time.Duration) error {
cacheTTL := 15 * time.Minute
if len(ttl) > 0 {
cacheTTL = ttl[0]
}
return r.GetWithCache(ctx, dest, cacheTTL, field+" = ?", value)
}
// SmartList 智能列表查询(根据查询复杂度自动选择缓存策略)
func (r *CachedBaseRepositoryImpl) SmartList(ctx context.Context, dest interface{}, options interfaces.ListOptions) error {
// 根据查询复杂度决定缓存策略
cacheTTL := r.calculateCacheTTL(options)
useCache := r.shouldUseCache(options)
db := r.GetDB(ctx)
if useCache {
db = db.Set("cache:enabled", true).Set("cache:ttl", cacheTTL)
} else {
db = db.Set("cache:disabled", true)
}
// 应用筛选条件
if options.Filters != nil {
for key, value := range options.Filters {
db = db.Where(key+" = ?", value)
}
}
// 应用搜索条件
if options.Search != "" {
// 这里应该由具体Repository实现搜索逻辑
r.logger.Debug("搜索查询默认禁用缓存", zap.String("search", options.Search))
db = db.Set("cache:disabled", true)
}
// 应用预加载
for _, include := range options.Include {
db = db.Preload(include)
}
// 应用排序
if options.Sort != "" {
order := "ASC"
if options.Order == "desc" || options.Order == "DESC" {
order = "DESC"
}
db = db.Order(options.Sort + " " + order)
} else {
db = db.Order("created_at DESC")
}
// 应用分页
if options.Page > 0 && options.PageSize > 0 {
offset := (options.Page - 1) * options.PageSize
db = db.Offset(offset).Limit(options.PageSize)
}
return db.Find(dest).Error
}
// calculateCacheTTL 计算缓存TTL
func (r *CachedBaseRepositoryImpl) calculateCacheTTL(options interfaces.ListOptions) time.Duration {
// 基础TTL
baseTTL := 15 * time.Minute
// 如果有搜索缩短TTL
if options.Search != "" {
return 2 * time.Minute
}
// 如果有复杂筛选缩短TTL
if len(options.Filters) > 3 {
return 5 * time.Minute
}
// 如果是简单查询延长TTL
if len(options.Filters) == 0 && options.Search == "" {
return 30 * time.Minute
}
return baseTTL
}
// shouldUseCache 判断是否应该使用缓存
func (r *CachedBaseRepositoryImpl) shouldUseCache(options interfaces.ListOptions) bool {
// 如果有搜索,不使用缓存(搜索结果变化频繁)
if options.Search != "" {
return false
}
// 如果筛选条件过多,不使用缓存
if len(options.Filters) > 5 {
return false
}
// 如果分页页数过大,不使用缓存
if options.Page > 10 {
return false
}
return true
}
// ================ 缓存预热方法 ================
// WarmupCommonQueries 预热常用查询
func (r *CachedBaseRepositoryImpl) WarmupCommonQueries(ctx context.Context, queries []WarmupQuery) error {
r.logger.Info("开始预热缓存",
zap.String("table", r.tableName),
zap.Int("queries", len(queries)),
)
for _, query := range queries {
if err := r.executeWarmupQuery(ctx, query); err != nil {
r.logger.Warn("缓存预热失败",
zap.String("query", query.Name),
zap.Error(err),
)
}
}
return nil
}
// WarmupQuery 预热查询定义
type WarmupQuery struct {
Name string `json:"name"`
SQL string `json:"sql"`
Args []interface{} `json:"args"`
TTL time.Duration `json:"ttl"`
Dest interface{} `json:"dest"`
}
// executeWarmupQuery 执行预热查询
func (r *CachedBaseRepositoryImpl) executeWarmupQuery(ctx context.Context, query WarmupQuery) error {
db := r.GetDB(ctx).
Set("cache:enabled", true).
Set("cache:ttl", query.TTL)
if query.SQL != "" {
return db.Raw(query.SQL, query.Args...).Scan(query.Dest).Error
}
return nil
}
// ================ 高级缓存特性 ================
// GetOrCreate 获取或创建(带缓存)
func (r *CachedBaseRepositoryImpl) GetOrCreate(ctx context.Context, dest interface{}, where string, args []interface{}, createFn func() interface{}) error {
// 先尝试从缓存获取
if err := r.GetWithCache(ctx, dest, 15*time.Minute, where, args...); err == nil {
return nil
}
// 缓存未命中,尝试从数据库获取
if err := r.GetDB(ctx).Where(where, args...).First(dest).Error; err == nil {
return nil
}
// 数据库也没有,创建新记录
if createFn != nil {
newEntity := createFn()
if err := r.CreateEntity(ctx, newEntity); err != nil {
return err
}
// 将新创建的实体复制到dest
// 这里需要反射或其他方式复制
return nil
}
return gorm.ErrRecordNotFound
}
// BatchGetWithCache 批量获取(带缓存)
func (r *CachedBaseRepositoryImpl) BatchGetWithCache(ctx context.Context, ids []string, dest interface{}, ttl time.Duration) error {
if len(ids) == 0 {
return nil
}
return r.FindWithCache(ctx, dest, ttl, "id IN ?", ids)
}
// RefreshCache 刷新缓存
func (r *CachedBaseRepositoryImpl) RefreshCache(ctx context.Context, pattern string) error {
r.logger.Info("刷新缓存",
zap.String("table", r.tableName),
zap.String("pattern", pattern),
)
// 这里需要调用缓存服务的删除模式方法
// 具体实现取决于你的CacheService接口
return nil
}
// ================ 缓存统计方法 ================
// GetCacheInfo 获取缓存信息
func (r *CachedBaseRepositoryImpl) GetCacheInfo() map[string]interface{} {
return map[string]interface{}{
"table_name": r.tableName,
"cache_enabled": true,
"default_ttl": "30m",
"cache_patterns": []string{
fmt.Sprintf("gorm_cache:%s:*", r.tableName),
},
}
}
// LogCacheOperation 记录缓存操作
func (r *CachedBaseRepositoryImpl) LogCacheOperation(operation, details string) {
r.logger.Debug("缓存操作",
zap.String("table", r.tableName),
zap.String("operation", operation),
zap.String("details", details),
)
}