【redis6.0.6】深入源码，一探究竟 -- redis服务器开机自启动

 * Copyright (c) 2009-2016, Salvatore Sanfilippo <antirez at gmail dot com>
 * All rights reserved.

void initServerConfig(void) {
    int j;

    updateCachedTime(1);	//更新时间
    getRandomHexChars(server.runid,CONFIG_RUN_ID_SIZE);
    server.runid[CONFIG_RUN_ID_SIZE] = '';
    changeReplicationId();
    clearReplicationId2();
    server.hz = CONFIG_DEFAULT_HZ; /* Initialize it ASAP, even if it may get
                                      updated later after loading the config.
                                      This value may be used before the server
                                      is initialized. */
    server.timezone = getTimeZone(); /* Initialized by tzset(). */
	//此处省略一堆 server.XXX 。
	   
    server.client_max_querybuf_len = PROTO_MAX_QUERYBUF_LEN;
    //此处省略一堆 server.XXX 。
    
    server.aof_state = AOF_OFF;
   	//此处省略一堆 server.XXX 。
   	
    server.notify_keyspace_events = 0;
    server.blocked_clients = 0;
    memset(server.blocked_clients_by_type,0,
           sizeof(server.blocked_clients_by_type));
    server.shutdown_asap = 0;
    server.cluster_configfile = zstrdup(CONFIG_DEFAULT_CLUSTER_CONFIG_FILE);
    server.cluster_module_flags = CLUSTER_MODULE_FLAG_NONE;
    server.migrate_cached_sockets = dictCreate(&migrateCacheDictType,NULL);
    server.next_client_id = 1; /* Client IDs, start from 1 .*/
    server.loading_process_events_interval_bytes = (1024*1024*2);

    server.lruclock = getLRUClock();
    resetServerSaveParams();	//声明是找到了，实现是找不到。。。莫非是在server.h头文件里声明了，然后不知道在哪个包了这个头文件的地方去实现？

    appendServerSaveParams(60*60,1);  /* save after 1 hour and 1 change */
    appendServerSaveParams(300,100);  /* save after 5 minutes and 100 changes */
    appendServerSaveParams(60,10000); /* save after 1 minute and 10000 changes */

    /* Replication related */
    server.masterauth = NULL;
    server.masterhost = NULL;
    server.masterport = 6379;
    server.master = NULL;
    server.cached_master = NULL;
    server.master_initial_offset = -1;
    server.repl_state = REPL_STATE_NONE;
    server.repl_transfer_tmpfile = NULL;
    server.repl_transfer_fd = -1;
    server.repl_transfer_s = NULL;
    server.repl_syncio_timeout = CONFIG_REPL_SYNCIO_TIMEOUT;
    server.repl_down_since = 0; /* Never connected, repl is down since EVER. */
    server.master_repl_offset = 0;

    /* Replication partial resync backlog */
    server.repl_backlog = NULL;
    server.repl_backlog_histlen = 0;
    server.repl_backlog_idx = 0;
    server.repl_backlog_off = 0;
    server.repl_no_slaves_since = time(NULL);

    /* Client output buffer limits */
    for (j = 0; j < CLIENT_TYPE_OBUF_COUNT; j++)
        server.client_obuf_limits[j] = clientBufferLimitsDefaults[j];


    /* Command table -- we initiialize it here as it is part of the
     * initial configuration, since command names may be changed via
     * redis.conf using the rename-command directive. */
    server.commands = dictCreate(&commandTableDictType,NULL);
    server.orig_commands = dictCreate(&commandTableDictType,NULL);
    populateCommandTable();
    server.delCommand = lookupCommandByCString("del");
    server.multiCommand = lookupCommandByCString("multi");
    server.lpushCommand = lookupCommandByCString("lpush");
    server.lpopCommand = lookupCommandByCString("lpop");
    server.rpopCommand = lookupCommandByCString("rpop");
    server.zpopminCommand = lookupCommandByCString("zpopmin");
    server.zpopmaxCommand = lookupCommandByCString("zpopmax");
    server.sremCommand = lookupCommandByCString("srem");
    server.execCommand = lookupCommandByCString("exec");
    server.expireCommand = lookupCommandByCString("expire");
    server.pexpireCommand = lookupCommandByCString("pexpire");
    server.xclaimCommand = lookupCommandByCString("xclaim");
    server.xgroupCommand = lookupCommandByCString("xgroup");
    server.rpoplpushCommand = lookupCommandByCString("rpoplpush");

    /* Debugging */
    server.assert_failed = "<no assertion failed>";
    server.assert_file = "<no file>";
    server.assert_line = 0;
    server.bug_report_start = 0;
    server.watchdog_period = 0;

    /* By default we want scripts to be always replicated by effects
     * (single commands executed by the script), and not by sending the
     * script to the slave / AOF. This is the new way starting from
     * Redis 5. However it is possible to revert it via redis.conf. */
    server.lua_always_replicate_commands = 1;

    initConfigValues();	//牵扯过长，我下一篇写config的时候再写
}