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                # 第 19 章 提升性能 **目錄** + 19.1\. 抓取策略(Fetching strategies) + 19.1.1\. 操作延遲加載的關聯 + 19.1.2\. 調整抓取策略(Tuning fetch strategies) + 19.1.3\. 單端關聯代理(Single-ended association proxies) + 19.1.4\. 實例化集合和代理(Initializing collections and proxies) + 19.1.5\. 使用批量抓取(Using batch fetching) + 19.1.6\. 使用子查詢抓取(Using subselect fetching) + 19.1.7\. 使用延遲屬性抓取(Using lazy property fetching) + 19.2\. 二級緩存(The Second Level Cache) + 19.2.1\. 緩存映射(Cache mappings) + 19.2.2\. 策略:只讀緩存(Strategy: read only) + 19.2.3\. 策略:讀/寫緩存(Strategy: read/write) + 19.2.4\. 策略:非嚴格讀/寫緩存(Strategy: nonstrict read/write) + 19.2.5\. 策略:事務緩存(transactional) + 19.3\. 管理緩存(Managing the caches) + 19.4\. 查詢緩存(The Query Cache) + 19.5\. 理解集合性能(Understanding Collection performance) + 19.5.1\. 分類(Taxonomy) + 19.5.2\. Lists, maps 和sets用于更新效率最高 + 19.5.3\. Bag和list是反向集合類中效率最高的 + 19.5.4\. 一次性刪除(One shot delete) + 19.6\. 監測性能(Monitoring performance) + 19.6.1\. 監測SessionFactory + 19.6.2\. 數據記錄(Metrics)
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