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文件缓存增加自动限速/提升本地缓存数据库写入和查询速度

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GoEdgeLab
2022-04-20 18:23:26 +08:00
parent c8b8071bee
commit f39c59569a
7 changed files with 147 additions and 33 deletions
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22
internal/caches/list_file_db.go
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@@ -58,6 +58,7 @@ func (this *FileListDB) Open(dbPath string) error {
writeDB.SetMaxOpenConns(1)
// TODO 耗时过长，暂时不整理数据库
// TODO 需要根据行数来判断是否VACUUM
/**_, err = db.Exec("VACUUM")
if err != nil {
return err
@@ -109,7 +110,7 @@ func (this *FileListDB) Init() error {
this.total = total
// 常用语句
this.existsByHashStmt, err = this.readDB.Prepare(`SELECT "expiredAt" FROM "` + this.itemsTableName + `" WHERE "hash"=? AND expiredAt>? LIMIT 1`)
this.existsByHashStmt, err = this.readDB.Prepare(`SELECT "expiredAt" FROM "` + this.itemsTableName + `" INDEXED BY "hash" WHERE "hash"=? AND expiredAt>? LIMIT 1`)
if err != nil {
return err
}
@@ -354,7 +355,7 @@ func (this *FileListDB) Close() error {
func (this *FileListDB) initTables(times int) error {
{
// expiredAt - 过期时间，用来判断有无过期
// staleAt - 陈旧最大时间，用来清理缓存
// staleAt - 过时缓存最大时间，用来清理缓存
_, err := this.writeDB.Exec(`CREATE TABLE IF NOT EXISTS "` + this.itemsTableName + `" (
"id" integer NOT NULL PRIMARY KEY AUTOINCREMENT,
"hash" varchar(32),
@@ -370,15 +371,9 @@ func (this *FileListDB) initTables(times int) error {
"serverId" integer
);
CREATE INDEX IF NOT EXISTS "createdAt"
ON "` + this.itemsTableName + `" (
"createdAt" ASC
);
CREATE INDEX IF NOT EXISTS "expiredAt"
ON "` + this.itemsTableName + `" (
"expiredAt" ASC
);
DROP INDEX IF EXISTS "createdAt";
DROP INDEX IF EXISTS "expiredAt";
DROP INDEX IF EXISTS "serverId";
CREATE INDEX IF NOT EXISTS "staleAt"
ON "` + this.itemsTableName + `" (
@@ -389,11 +384,6 @@ CREATE UNIQUE INDEX IF NOT EXISTS "hash"
ON "` + this.itemsTableName + `" (
"hash" ASC
);
CREATE INDEX IF NOT EXISTS "serverId"
ON "` + this.itemsTableName + `" (
"serverId" ASC
);
`)
if err != nil {