Lesson in Pushing Redis to its limits

(Last Updated On: September 11, 2015)

Lesson in Pushing  Redis to its limits

I really pushed it but this sounds reasonable

C Code below

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//github.com/redis/hiredis/blob/master/examples/example.c
//Note: loop 28233Connection error: Cannot assign requested address
//reasonable exception with github.com/redis/hiredis/issues/58

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include “hiredis.h”

void redisTest(int argc, char **argv) {
unsigned int j;
redisContext *c;
redisReply *reply;
const char *hostname = (argc > 1) ? argv[1] : “127.0.0.1”;
int port = (argc > 2) ? atoi(argv[2]) : 6379;

struct timeval timeout = { 1, 500000 }; // 1.5 seconds
c = redisConnectWithTimeout(hostname, port, timeout);
if (c == NULL || c->err) {
if (c) {
printf(“Connection error: %s\n”, c->errstr);
redisFree(c);
} else {
printf(“Connection error: can’t allocate redis context\n”);
}
exit(1);
}

/* Create a list of numbers, from 0 to 9 */
reply = redisCommand(c,”DEL mylist”);
freeReplyObject(reply);
for (j = 0; j < 10; j++) {
char buf[64];

snprintf(buf,64,”%d”,j);
reply = redisCommand(c,”LPUSH mylist element-%s”, buf);
freeReplyObject(reply);
}

/* Let’s check what we have inside the list */
reply = redisCommand(c,”LRANGE mylist 0 -1″);
if (reply->type == REDIS_REPLY_ARRAY) {
for (j = 0; j < reply->elements; j++) {
printf(“%u) %s\n”, j, reply->element[j]->str);
}
}
freeReplyObject(reply);

/* Disconnects and frees the context */
redisFree(c);

}
void main(int argc, char **argv) {
int i = 0;

for(;;) {
printf(“\n loop %d”, i++);
redisTest(argc, argv);
}
}

 

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Hi i there My name is Bryan Downing. I am part of a company called QuantLabs.Net This is specifically a company with a high profile blog about technology, trading, financial, investment, quant, etc. It posts things on how to do job interviews with large companies like Morgan Stanley, Bloomberg, Citibank, and IBM. It also posts different unique tips and tricks on Java, C++, or C programming. It posts about different techniques in learning about Matlab and building models or strategies. There is a lot here if you are into venturing into the financial world like quant or technical analysis. It also discusses the future generation of trading and programming Specialties: C++, Java, C#, Matlab, quant, models, strategies, technical analysis, linux, windows P.S. I have been known to be the worst typist. Do not be offended by it as I like to bang stuff out and put priorty of what I do over typing. Maybe one day I can get a full time copy editor to help out. Do note I prefer videos as they are much easier to produce so check out my many video at youtube.com/quantlabs