redis.h

【对象】

typedef struct redisObject {

    unsigned type:4;【REDIS_STRING,REDIS_LIST, HASH, SET, ZSET】

    unsigned encoding:4;

    unsigned lru:REDIS_LRU_BITS; /* lru time (relative to server.lruclock) */ //空转时长

    int refcount; //引用计数

    void *ptr;

} robj;

 

---

【数据库】

typedef struct redisDb {

    dict *dict;                 /* The keyspace for this DB */

    dict *expires;              /* Timeout of keys with a timeout set */

    dict *blocking_keys;        /* Keys with clients waiting for data (BLPOP) */

    dict *ready_keys;           /* Blocked keys that received a PUSH */

    dict *watched_keys;         /* WATCHED keys for MULTI/EXEC CAS */

    int id;

    long long avg_ttl;          /* Average TTL, just for stats */

} redisDb;