Module bus.cache

Package org.miaixz.bus.cache.support.metrics

Class SqliteMetrics

java.lang.Object

org.miaixz.bus.cache.support.metrics.AbstractMetrics

org.miaixz.bus.cache.support.metrics.SqliteMetrics

All Implemented Interfaces:

Metrics

public class SqliteMetrics
extends AbstractMetrics

SQLite数据库缓存命中率统计实现

基于SQLite数据库实现的缓存命中率统计，使用单连接数据源和JdbcTemplate进行数据库操作。 自动创建缓存统计表，支持并发更新和乐观锁机制。 SQLite是一种轻量级的嵌入式数据库，适用于单机环境或测试环境。

Since:

Java 17+

Author:

Kimi Liu

Nested Class Summary

Nested classes/interfaces inherited from class org.miaixz.bus.cache.support.metrics.AbstractMetrics

AbstractMetrics.DataDO

Nested classes/interfaces inherited from interface org.miaixz.bus.cache.Metrics

Metrics.Snapshot

Constructor Summary

Constructors

Constructor	Description
SqliteMetrics(String url, String username, String password)	构造方法
SqliteMetrics(Map<String,Object> context)	构造方法

Method Summary

Modifier and Type	Method	Description
protected Supplier<org.springframework.jdbc.core.JdbcOperations>	jdbcOperationsSupplier(Map<String,Object> context)	创建JdbcOperations并初始化数据库
protected Stream<AbstractMetrics.DataDO>	transferResults(List<Map<String,Object>> mapResults)	将数据库查询结果转换为DataDO流

Methods inherited from class org.miaixz.bus.cache.support.metrics.AbstractMetrics

getHitting, hitIncr, newHashMap, reqIncr, reset, resetAll, tearDown

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.miaixz.bus.cache.Metrics

summaryName

Constructor Details

SqliteMetrics

public SqliteMetrics(Map<String,Object> context)

构造方法

Parameters:

context - 上下文参数

SqliteMetrics

public SqliteMetrics(String url,
 String username,
 String password)

构造方法

Parameters:

url - 数据库URL

username - 用户名

password - 密码

Method Details

jdbcOperationsSupplier

protected Supplier<org.springframework.jdbc.core.JdbcOperations> jdbcOperationsSupplier(Map<String,Object> context)

创建JdbcOperations并初始化数据库

创建SQLite数据库连接，初始化JdbcTemplate，并创建缓存统计表

Specified by:

jdbcOperationsSupplier in class AbstractMetrics

Parameters:

context - 上下文参数

Returns:

初始化完成的JdbcOperations对象

transferResults

protected Stream<AbstractMetrics.DataDO> transferResults(List<Map<String,Object>> mapResults)

将数据库查询结果转换为DataDO流

将查询结果Map转换为DataDO对象流，便于后续处理 注意：SQLite中BIGINT类型在查询结果中可能返回Integer类型

Specified by:

transferResults in class AbstractMetrics

Parameters:

mapResults - 数据库查询结果

Returns:

DataDO流