网上看到一个号称很 牛逼的 数据库连接池 HikariCP ，想试一试看看效果如何，于是修改了一些 nutzwk 的配置文件，成功的跑起来了，现分享给有需要的朋友。
数据库配置 db.properties

pg.jdbcUrl=jdbc:postgresql://127.0.0.1:5432/nutzwk
pg.username=postgres
pg.password=123456
pg.connectionTestQuery=select 1
pg.maxPoolSize=20
pg.driverClassName=org.postgresql.Driver

dao.json 配置

var ioc = {
    conf: {
        type: "org.nutz.ioc.impl.PropertiesProxy",
        fields: {
            paths: ["config/custom/"]
        }
    },
    dsconfig: {
        factory: "$conf#make",
        args: ["com.zaxxer.hikari.HikariConfig", "pg."],
        type: "com.zaxxer.hikari.HikariConfig"      
    },
    dataSource: {
        args: [{refer: "dsconfig"}],
        type: "com.zaxxer.hikari.HikariDataSource",
        events: {
            depose: 'close'
        }
    },
    dao: {
        type: "org.nutz.dao.impl.NutDao",
        args: [{refer: "dataSource"}],
        fields: {
            executor: {refer: "cacheExecutor"}
        }
    },
    cacheExecutor: {
        type: "org.nutz.plugins.cache.dao.CachedNutDaoExecutor",
        fields: {
            cacheProvider: {refer: "cacheProvider"},
            cachedTableNames: ["sys_user", "sys_role", "sys_menu"]
        }
    },
    /*
     // 基于内存的简单LRU实现
     cacheProvider : {
     type : "org.nutz.plugins.cache.dao.impl.provider.MemoryDaoCacheProvider",
     fields : {
     cacheSize : 10000 // 缓存的对象数
     },
     events : {
     create : "init"
     }
     }
     */
    // 基于Ehcache的DaoCacheProvider
    cacheProvider: {
        type: "org.nutz.plugins.cache.dao.impl.provider.EhcacheDaoCacheProvider",
        fields: {
            cacheManager: {refer: "cacheManager"} // 引用ehcache.json中定义的CacheManager
        },
        events: {
            create: "init"
        }
    }
};