Cluster: from 4096 to 16384 hash slots.

src/cluster.c

@@ -299,10 +299,10 @@ void clusterAcceptHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
  * Key space handling
  * -------------------------------------------------------------------------- */
 
-/* We have 4096 hash slots. The hash slot of a given key is obtained
- * as the least significant 12 bits of the crc16 of the key. */
+/* We have 16384 hash slots. The hash slot of a given key is obtained
+ * as the least significant 14 bits of the crc16 of the key. */
 unsigned int keyHashSlot(char *key, int keylen) {
-    return crc16(key,keylen) & 0x0FFF;
+    return crc16(key,keylen) & 0x3FFF;
 }
 
 /* -----------------------------------------------------------------------------

src/redis.h

@@ -514,7 +514,7 @@ typedef struct redisOpArray {
  * Redis cluster data structures
  *----------------------------------------------------------------------------*/
 
-#define REDIS_CLUSTER_SLOTS 4096
+#define REDIS_CLUSTER_SLOTS 16384
 #define REDIS_CLUSTER_OK 0          /* Everything looks ok */
 #define REDIS_CLUSTER_FAIL 1        /* The cluster can't work */
 #define REDIS_CLUSTER_NEEDHELP 2    /* The cluster works, but needs some help */