String
//
// Created by zhangrongxiang on 2018/3/7 13:48
// File string2
//
#include <hiredis/hiredis.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
连接redis服务
int main() {
redisContext *context = redisConnect("127.0.0.1", 6379);
if (context == NULL || context->err) {
if (context) {
printf("%s\n", context->errstr);
} else {
printf("redisConnect error\n");
}
exit(EXIT_FAILURE);
}
printf("-----------------connect success--------------------\n");
SET key value
char *key = "str";
char *val = "Hello World";
/*SET key value */
redisReply *reply = redisCommand(context, "SET %s %s", key, val);
if (reply->type == REDIS_REPLY_STATUS) {
/*SET str Hello World*/
printf("SET %s %s\n", key, val);
}
freeReplyObject(reply);
GET key
/*GET key*/
reply = redisCommand(context, "GET %s", key);
if (reply->type == REDIS_REPLY_STRING) {
/*GET str Hello World*/
printf("GET str %s\n", reply->str);
/*GET len 11*/
printf("GET len %d\n", reply->len);
}
freeReplyObject(reply);
APPEND key value
/*APPEND key value*/
char *append = " I am your GOD";
reply = redisCommand(context, "APPEND %s %s", key, append);
if (reply->type == REDIS_REPLY_INTEGER) {
printf("APPEND %s %s \n", key, append);
}
freeReplyObject(reply);
/*GET key*/
reply = redisCommand(context, "GET %s", key);
if (reply->type == REDIS_REPLY_STRING) {
//GET Hello World I am your GOD
printf("GET %s\n", reply->str);
}
freeReplyObject(reply);
INCR key
/*INCR key*/
reply = redisCommand(context, "INCR counter");
if (reply->type == REDIS_REPLY_INTEGER) {
printf("INCR counter %lld\n", reply->integer);
}
freeReplyObject(reply);
reply = redisCommand(context, "INCR counter");
if (reply->type == REDIS_REPLY_INTEGER) {
printf("INCR counter %lld\n", reply->integer);
}
freeReplyObject(reply);
DECR key
/*DECR key*/
reply = redisCommand(context, "DECR counter");
if (reply->type == REDIS_REPLY_INTEGER) {
printf("DECR counter %lld\n", reply->integer);
}
freeReplyObject(reply);
reply = redisCommand(context, "DECR counter");
if (reply->type == REDIS_REPLY_INTEGER) {
printf("DECR counter %lld\n", reply->integer);
}
freeReplyObject(reply);
DECRBY key decrement
/*DECRBY key decrement*/
reply = redisCommand(context, "DECRBY counter 5");
if (reply->type == REDIS_REPLY_INTEGER) {
printf("DECRBY counter %lld\n", reply->integer);
}
freeReplyObject(reply);
reply = redisCommand(context, "DECRBY counter 5");
if (reply->type == REDIS_REPLY_INTEGER) {
printf("DECRBY counter %lld\n", reply->integer);
}
freeReplyObject(reply);
INCRBY key increment
/*INCRBY key increment*/
reply = redisCommand(context, "INCRBY counter 5");
if (reply->type == REDIS_REPLY_INTEGER) {
printf("INCRBY counter %lld\n", reply->integer);
}
freeReplyObject(reply);
reply = redisCommand(context, "INCRBY counter 5");
if (reply->type == REDIS_REPLY_INTEGER) {
printf("INCRBY counter %lld\n", reply->integer);
}
freeReplyObject(reply);
ETRANGE key start end
/*GETRANGE key start end*/
reply = redisCommand(context, "GETRANGE str 0 5");
if (reply->type == REDIS_REPLY_STRING) {
/*GETRANGE str Hello*/
printf("GETRANGE %s %s\n", key, reply->str);
}
freeReplyObject(reply);
GETSET key value
/*GETSET key value*/
reply = redisCommand(context, "GETSET %s %s", key, val);
if (reply->type == REDIS_REPLY_STRING) {
/*GETSET str Hello World I am your GOD*/
printf("GETSET %s %s\n", key, reply->str);
}
/*INCRBYFLOAT key increment*/
reply = redisCommand(context, "INCRBYFLOAT f 2.1");
if (reply->type == REDIS_REPLY_STRING) {
printf("INCRBYFLOAT counter %s\n", reply->str);
}
MSET key value [key value …]
/*MSET key value [key value ...]*/
reply = redisCommand(context, "MSET k1 hello k2 world k3 good");
if (reply->type == REDIS_REPLY_STATUS) {
printf("MSET k1 hello k2 world k3 good\n");
}
freeReplyObject(reply);
MGET key [key …]
/*MGET key [key ...]*/
reply = redisCommand(context, "MGET k1 k2 k3");
if (reply->type == REDIS_REPLY_ARRAY) {
printf("MGET k1 k2 k3 \n");
redisReply **pReply = reply->element;
int i = 0;
size_t len = reply->elements;
//hello world good
for (; i < len; ++i) {
printf("%s ", pReply[i]->str);
}
printf("\n");
}
freeReplyObject(reply);
STRLEN key
/*STRLEN key*/
reply = redisCommand(context, "STRLEN str");
if (reply->type == REDIS_REPLY_INTEGER) {
//1
printf("STRLEN str %lld \n", reply->integer);
}
/*SETEX key seconds value*/
reply = redisCommand(context, "SETEX s 30 30seconds");
if (reply->type == REDIS_REPLY_STATUS) {
printf("SETEX s 30 30seconds\n");
freeReplyObject(reply);
int i = 0;
while (i++ < 32) {
reply = redisCommand(context, "GET s");
if (reply->type == REDIS_REPLY_STRING) {
printf("%d s %s\n", i, reply->str);
} else if (reply->type == REDIS_REPLY_NIL) {
printf("%d s nil\n", i);
}
freeReplyObject(reply);
sleep(1);
/*
* 29 s 30seconds
* 30 s 30seconds
* 31 s nil
* 32 s nil
*/
}
}
redisFree
redisFree(context);
return EXIT_SUCCESS;
}
struct
#define REDIS_REPLY_STRING 1
#define REDIS_REPLY_ARRAY 2
#define REDIS_REPLY_INTEGER 3
#define REDIS_REPLY_NIL 4
#define REDIS_REPLY_STATUS 5
#define REDIS_REPLY_ERROR 6
/* This is the reply object returned by redisCommand() */
typedef struct redisReply {
int type; /* REDIS_REPLY_* */
long long integer; /* The integer when type is REDIS_REPLY_INTEGER */
int len; /* Length of string */
char *str; /* Used for both REDIS_REPLY_ERROR and REDIS_REPLY_STRING */
size_t elements; /* number of elements, for REDIS_REPLY_ARRAY */
struct redisReply **element; /* elements vector for REDIS_REPLY_ARRAY */
} redisReply;
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