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in-memory specialized object encoding (for now 32 signed integers only)

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1 parent 557a74e commit 942a39618b8a7fe59435f632ccfb5e7495564fa1 @antirez committed Sep 10, 2009
Showing with 253 additions and 59 deletions.
  1. +1 −1 Makefile
  2. +252 −58 redis.c
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2 Makefile
@@ -3,7 +3,7 @@
# This file is released under the BSD license, see the COPYING file
DEBUG?= -g -rdynamic -ggdb
-CFLAGS?= -std=c99 -pedantic -O2 -Wall -W
+CFLAGS?= -std=c99 -O2 -pedantic -Wall -W
CCOPT= $(CFLAGS)
OBJ = adlist.o ae.o anet.o dict.o redis.o sds.o zmalloc.o lzf_c.o lzf_d.o pqsort.o
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310 redis.c
@@ -104,6 +104,10 @@
#define REDIS_SET 2
#define REDIS_HASH 3
+/* Objects encoding */
+#define REDIS_ENCODING_RAW 0 /* Raw representation */
+#define REDIS_ENCODING_INT 1 /* Encoded as integer */
+
/* Object types only used for dumping to disk */
#define REDIS_EXPIRETIME 253
#define REDIS_SELECTDB 254
@@ -183,7 +187,9 @@
/* A redis object, that is a type able to hold a string / list / set */
typedef struct redisObject {
void *ptr;
- int type;
+ unsigned char type;
+ unsigned char encoding;
+ unsigned char notused[2];
int refcount;
} robj;
@@ -323,6 +329,8 @@ static robj *createStringObject(char *ptr, size_t len);
static void replicationFeedSlaves(list *slaves, struct redisCommand *cmd, int dictid, robj **argv, int argc);
static int syncWithMaster(void);
static robj *tryObjectSharing(robj *o);
+static int tryObjectEncoding(robj *o);
+static robj *getDecodedObject(const robj *o);
static int removeExpire(redisDb *db, robj *key);
static int expireIfNeeded(redisDb *db, robj *key);
static int deleteIfVolatile(redisDb *db, robj *key);
@@ -634,32 +642,68 @@ static void dictRedisObjectDestructor(void *privdata, void *val)
decrRefCount(val);
}
-static int dictSdsKeyCompare(void *privdata, const void *key1,
+static int dictObjKeyCompare(void *privdata, const void *key1,
const void *key2)
{
const robj *o1 = key1, *o2 = key2;
return sdsDictKeyCompare(privdata,o1->ptr,o2->ptr);
}
-static unsigned int dictSdsHash(const void *key) {
+static unsigned int dictObjHash(const void *key) {
const robj *o = key;
return dictGenHashFunction(o->ptr, sdslen((sds)o->ptr));
}
+static int dictEncObjKeyCompare(void *privdata, const void *key1,
+ const void *key2)
+{
+ const robj *o1 = key1, *o2 = key2;
+
+ if (o1->encoding == REDIS_ENCODING_RAW &&
+ o2->encoding == REDIS_ENCODING_RAW)
+ return sdsDictKeyCompare(privdata,o1->ptr,o2->ptr);
+ else {
+ robj *dec1, *dec2;
+ int cmp;
+
+ dec1 = o1->encoding != REDIS_ENCODING_RAW ?
+ getDecodedObject(o1) : (robj*)o1;
+ dec2 = o2->encoding != REDIS_ENCODING_RAW ?
+ getDecodedObject(o2) : (robj*)o2;
+ cmp = sdsDictKeyCompare(privdata,dec1->ptr,dec2->ptr);
+ if (dec1 != o1) decrRefCount(dec1);
+ if (dec2 != o2) decrRefCount(dec2);
+ return cmp;
+ }
+}
+
+static unsigned int dictEncObjHash(const void *key) {
+ const robj *o = key;
+
+ if (o->encoding == REDIS_ENCODING_RAW)
+ return dictGenHashFunction(o->ptr, sdslen((sds)o->ptr));
+ else {
+ robj *dec = getDecodedObject(o);
+ unsigned int hash = dictGenHashFunction(dec->ptr, sdslen((sds)dec->ptr));
+ decrRefCount(dec);
+ return hash;
+ }
+}
+
static dictType setDictType = {
- dictSdsHash, /* hash function */
+ dictEncObjHash, /* hash function */
NULL, /* key dup */
NULL, /* val dup */
- dictSdsKeyCompare, /* key compare */
+ dictEncObjKeyCompare, /* key compare */
dictRedisObjectDestructor, /* key destructor */
NULL /* val destructor */
};
static dictType hashDictType = {
- dictSdsHash, /* hash function */
+ dictObjHash, /* hash function */
NULL, /* key dup */
NULL, /* val dup */
- dictSdsKeyCompare, /* key compare */
+ dictObjKeyCompare, /* key compare */
dictRedisObjectDestructor, /* key destructor */
dictRedisObjectDestructor /* val destructor */
};
@@ -1319,6 +1363,10 @@ static int processCommand(redisClient *c) {
for(j = 1; j < c->argc; j++)
c->argv[j] = tryObjectSharing(c->argv[j]);
}
+ /* Let's try to encode the bulk object to save space. */
+ if (cmd->flags & REDIS_CMD_BULK)
+ tryObjectEncoding(c->argv[c->argc-1]);
+
/* Check if the user is authenticated */
if (server.requirepass && !c->authenticated && cmd->proc != authCommand) {
addReplySds(c,sdsnew("-ERR operation not permitted\r\n"));
@@ -1560,8 +1608,12 @@ static void addReply(redisClient *c, robj *obj) {
c->replstate == REDIS_REPL_ONLINE) &&
aeCreateFileEvent(server.el, c->fd, AE_WRITABLE,
sendReplyToClient, c, NULL) == AE_ERR) return;
+ if (obj->encoding != REDIS_ENCODING_RAW) {
+ obj = getDecodedObject(obj);
+ } else {
+ incrRefCount(obj);
+ }
if (!listAddNodeTail(c->reply,obj)) oom("listAddNodeTail");
- incrRefCount(obj);
}
static void addReplySds(redisClient *c, sds s) {
@@ -1570,6 +1622,26 @@ static void addReplySds(redisClient *c, sds s) {
decrRefCount(o);
}
+static void addReplyBulkLen(redisClient *c, robj *obj) {
+ size_t len;
+
+ if (obj->encoding == REDIS_ENCODING_RAW) {
+ len = sdslen(obj->ptr);
+ } else {
+ long n = (long)obj->ptr;
+
+ len = 1;
+ if (n < 0) {
+ len++;
+ n = -n;
+ }
+ while((n = n/10) != 0) {
+ len++;
+ }
+ }
+ addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",len));
+}
+
static void acceptHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
int cport, cfd;
char cip[128];
@@ -1618,6 +1690,7 @@ static robj *createObject(int type, void *ptr) {
}
if (!o) oom("createObject");
o->type = type;
+ o->encoding = REDIS_ENCODING_RAW;
o->ptr = ptr;
o->refcount = 1;
return o;
@@ -1642,7 +1715,9 @@ static robj *createSetObject(void) {
}
static void freeStringObject(robj *o) {
- sdsfree(o->ptr);
+ if (o->encoding == REDIS_ENCODING_RAW) {
+ sdsfree(o->ptr);
+ }
}
static void freeListObject(robj *o) {
@@ -1686,6 +1761,36 @@ static void decrRefCount(void *obj) {
}
}
+static robj *lookupKey(redisDb *db, robj *key) {
+ dictEntry *de = dictFind(db->dict,key);
+ return de ? dictGetEntryVal(de) : NULL;
+}
+
+static robj *lookupKeyRead(redisDb *db, robj *key) {
+ expireIfNeeded(db,key);
+ return lookupKey(db,key);
+}
+
+static robj *lookupKeyWrite(redisDb *db, robj *key) {
+ deleteIfVolatile(db,key);
+ return lookupKey(db,key);
+}
+
+static int deleteKey(redisDb *db, robj *key) {
+ int retval;
+
+ /* We need to protect key from destruction: after the first dictDelete()
+ * it may happen that 'key' is no longer valid if we don't increment
+ * it's count. This may happen when we get the object reference directly
+ * from the hash table with dictRandomKey() or dict iterators */
+ incrRefCount(key);
+ if (dictSize(db->expires)) dictDelete(db->expires,key);
+ retval = dictDelete(db->dict,key);
+ decrRefCount(key);
+
+ return retval == DICT_OK;
+}
+
/* Try to share an object against the shared objects pool */
static robj *tryObjectSharing(robj *o) {
struct dictEntry *de;
@@ -1731,34 +1836,54 @@ static robj *tryObjectSharing(robj *o) {
}
}
-static robj *lookupKey(redisDb *db, robj *key) {
- dictEntry *de = dictFind(db->dict,key);
- return de ? dictGetEntryVal(de) : NULL;
-}
+/* Try to encode a string object in order to save space */
+static int tryObjectEncoding(robj *o) {
+ long value;
+ char *endptr, buf[32];
+ sds s = o->ptr;
-static robj *lookupKeyRead(redisDb *db, robj *key) {
- expireIfNeeded(db,key);
- return lookupKey(db,key);
-}
+ if (o->encoding != REDIS_ENCODING_RAW)
+ return REDIS_ERR; /* Already encoded */
-static robj *lookupKeyWrite(redisDb *db, robj *key) {
- deleteIfVolatile(db,key);
- return lookupKey(db,key);
-}
+ /* It's not save to encode shared objects: shared objects can be shared
+ * everywhere in the "object space" of Redis. Encoded objects can only
+ * appear as "values" (and not, for instance, as keys) */
+ if (o->refcount > 1) return REDIS_ERR;
-static int deleteKey(redisDb *db, robj *key) {
- int retval;
+ /* Currently we try to encode only strings */
+ assert(o->type == REDIS_STRING);
- /* We need to protect key from destruction: after the first dictDelete()
- * it may happen that 'key' is no longer valid if we don't increment
- * it's count. This may happen when we get the object reference directly
- * from the hash table with dictRandomKey() or dict iterators */
- incrRefCount(key);
- if (dictSize(db->expires)) dictDelete(db->expires,key);
- retval = dictDelete(db->dict,key);
- decrRefCount(key);
+ /* Check if it's possible to encode this value as a long. We are assuming
+ * that sizeof(long) = sizeof(void) in all the supported archs. */
+ value = strtol(s, &endptr, 10);
+ if (endptr[0] != '\0') return REDIS_ERR;
+ snprintf(buf,32,"%ld",value);
- return retval == DICT_OK;
+ /* If the number converted back into a string is not identical
+ * then it's not possible to encode the string as integer */
+ if (strlen(buf) != sdslen(s) || memcmp(buf,s,sdslen(s))) return REDIS_ERR;
+
+ /* Ok, this object can be encoded */
+ o->encoding = REDIS_ENCODING_INT;
+ sdsfree(o->ptr);
+ o->ptr = (void*) value;
+ return REDIS_OK;
+}
+
+/* Get a decoded version of an encoded object (returned as a new object) */
+static robj *getDecodedObject(const robj *o) {
+ robj *dec;
+
+ assert(o->encoding != REDIS_ENCODING_RAW);
+ if (o->type == REDIS_STRING && o->encoding == REDIS_ENCODING_INT) {
+ char buf[32];
+
+ snprintf(buf,32,"%ld",(long)o->ptr);
+ dec = createStringObject(buf,strlen(buf));
+ return dec;
+ } else {
+ assert(1 != 1);
+ }
}
/*============================ DB saving/loading ============================ */
@@ -1865,10 +1990,12 @@ static int rdbSaveLzfStringObject(FILE *fp, robj *obj) {
/* Save a string objet as [len][data] on disk. If the object is a string
* representation of an integer value we try to safe it in a special form */
-static int rdbSaveStringObject(FILE *fp, robj *obj) {
- size_t len = sdslen(obj->ptr);
+static int rdbSaveStringObjectRaw(FILE *fp, robj *obj) {
+ size_t len;
int enclen;
+ len = sdslen(obj->ptr);
+
/* Try integer encoding */
if (len <= 11) {
unsigned char buf[5];
@@ -1880,7 +2007,7 @@ static int rdbSaveStringObject(FILE *fp, robj *obj) {
/* Try LZF compression - under 20 bytes it's unable to compress even
* aaaaaaaaaaaaaaaaaa so skip it */
- if (1 && len > 20) {
+ if (len > 20) {
int retval;
retval = rdbSaveLzfStringObject(fp,obj);
@@ -1895,6 +2022,21 @@ static int rdbSaveStringObject(FILE *fp, robj *obj) {
return 0;
}
+/* Like rdbSaveStringObjectRaw() but handle encoded objects */
+static int rdbSaveStringObject(FILE *fp, robj *obj) {
+ int retval;
+ robj *dec;
+
+ if (obj->encoding != REDIS_ENCODING_RAW) {
+ dec = getDecodedObject(obj);
+ retval = rdbSaveStringObjectRaw(fp,dec);
+ decrRefCount(dec);
+ return retval;
+ } else {
+ return rdbSaveStringObjectRaw(fp,obj);
+ }
+}
+
/* Save the DB on disk. Return REDIS_ERR on error, REDIS_OK on success */
static int rdbSave(char *filename) {
dictIterator *di = NULL;
@@ -2212,6 +2354,7 @@ static int rdbLoad(char *filename) {
if (type == REDIS_STRING) {
/* Read string value */
if ((o = rdbLoadStringObject(fp,rdbver)) == NULL) goto eoferr;
+ tryObjectEncoding(o);
} else if (type == REDIS_LIST || type == REDIS_SET) {
/* Read list/set value */
uint32_t listlen;
@@ -2224,6 +2367,7 @@ static int rdbLoad(char *filename) {
robj *ele;
if ((ele = rdbLoadStringObject(fp,rdbver)) == NULL) goto eoferr;
+ tryObjectEncoding(ele);
if (type == REDIS_LIST) {
if (!listAddNodeTail((list*)o->ptr,ele))
oom("listAddNodeTail");
@@ -2277,8 +2421,7 @@ static void pingCommand(redisClient *c) {
}
static void echoCommand(redisClient *c) {
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",
- (int)sdslen(c->argv[1]->ptr)));
+ addReplyBulkLen(c,c->argv[1]);
addReply(c,c->argv[1]);
addReply(c,shared.crlf);
}
@@ -2323,7 +2466,7 @@ static void getCommand(redisClient *c) {
if (o->type != REDIS_STRING) {
addReply(c,shared.wrongtypeerr);
} else {
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",(int)sdslen(o->ptr)));
+ addReplyBulkLen(c,o);
addReply(c,o);
addReply(c,shared.crlf);
}
@@ -2354,7 +2497,7 @@ static void mgetCommand(redisClient *c) {
if (o->type != REDIS_STRING) {
addReply(c,shared.nullbulk);
} else {
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",(int)sdslen(o->ptr)));
+ addReplyBulkLen(c,o);
addReply(c,o);
addReply(c,shared.crlf);
}
@@ -2376,12 +2519,18 @@ static void incrDecrCommand(redisClient *c, long long incr) {
} else {
char *eptr;
- value = strtoll(o->ptr, &eptr, 10);
+ if (o->encoding == REDIS_ENCODING_RAW)
+ value = strtoll(o->ptr, &eptr, 10);
+ else if (o->encoding == REDIS_ENCODING_INT)
+ value = (long)o->ptr;
+ else
+ assert(1 != 1);
}
}
value += incr;
o = createObject(REDIS_STRING,sdscatprintf(sdsempty(),"%lld",value));
+ tryObjectEncoding(o);
retval = dictAdd(c->db->dict,c->argv[1],o);
if (retval == DICT_ERR) {
dictReplace(c->db->dict,c->argv[1],o);
@@ -2742,7 +2891,7 @@ static void lindexCommand(redisClient *c) {
addReply(c,shared.nullbulk);
} else {
robj *ele = listNodeValue(ln);
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",(int)sdslen(ele->ptr)));
+ addReplyBulkLen(c,ele);
addReply(c,ele);
addReply(c,shared.crlf);
}
@@ -2802,7 +2951,7 @@ static void popGenericCommand(redisClient *c, int where) {
addReply(c,shared.nullbulk);
} else {
robj *ele = listNodeValue(ln);
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",(int)sdslen(ele->ptr)));
+ addReplyBulkLen(c,ele);
addReply(c,ele);
addReply(c,shared.crlf);
listDelNode(list,ln);
@@ -2858,7 +3007,7 @@ static void lrangeCommand(redisClient *c) {
addReplySds(c,sdscatprintf(sdsempty(),"*%d\r\n",rangelen));
for (j = 0; j < rangelen; j++) {
ele = listNodeValue(ln);
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",(int)sdslen(ele->ptr)));
+ addReplyBulkLen(c,ele);
addReply(c,ele);
addReply(c,shared.crlf);
ln = ln->next;
@@ -3090,7 +3239,7 @@ static void spopCommand(redisClient *c) {
} else {
robj *ele = dictGetEntryKey(de);
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",sdslen(ele->ptr)));
+ addReplyBulkLen(c,ele);
addReply(c,ele);
addReply(c,shared.crlf);
dictDelete(set->ptr,ele);
@@ -3171,7 +3320,7 @@ static void sinterGenericCommand(redisClient *c, robj **setskeys, int setsnum, r
continue; /* at least one set does not contain the member */
ele = dictGetEntryKey(de);
if (!dstkey) {
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",sdslen(ele->ptr)));
+ addReplyBulkLen(c,ele);
addReply(c,ele);
addReply(c,shared.crlf);
cardinality++;
@@ -3280,8 +3429,7 @@ static void sunionDiffGenericCommand(redisClient *c, robj **setskeys, int setsnu
robj *ele;
ele = dictGetEntryKey(de);
- addReplySds(c,sdscatprintf(sdsempty(),
- "$%d\r\n",sdslen(ele->ptr)));
+ addReplyBulkLen(c,ele);
addReply(c,ele);
addReply(c,shared.crlf);
}
@@ -3357,6 +3505,12 @@ static robj *lookupKeyByPattern(redisDb *db, robj *pattern, robj *subst) {
char buf[REDIS_SORTKEY_MAX+1];
} keyname;
+ if (subst->encoding == REDIS_ENCODING_RAW)
+ incrRefCount(subst);
+ else {
+ subst = getDecodedObject(subst);
+ }
+
spat = pattern->ptr;
ssub = subst->ptr;
if (sdslen(spat)+sdslen(ssub)-1 > REDIS_SORTKEY_MAX) return NULL;
@@ -3376,6 +3530,8 @@ static robj *lookupKeyByPattern(redisDb *db, robj *pattern, robj *subst) {
keyobj.type = REDIS_STRING;
keyobj.ptr = ((char*)&keyname)+(sizeof(long)*2);
+ decrRefCount(subst);
+
/* printf("lookup '%s' => %p\n", keyname.buf,de); */
return lookupKeyRead(db,&keyobj);
}
@@ -3413,7 +3569,20 @@ static int sortCompare(const void *s1, const void *s2) {
}
} else {
/* Compare elements directly */
- cmp = strcoll(so1->obj->ptr,so2->obj->ptr);
+ if (so1->obj->encoding == REDIS_ENCODING_RAW &&
+ so2->obj->encoding == REDIS_ENCODING_RAW) {
+ cmp = strcoll(so1->obj->ptr,so2->obj->ptr);
+ } else {
+ robj *dec1, *dec2;
+
+ dec1 = so1->obj->encoding == REDIS_ENCODING_RAW ?
+ so1->obj : getDecodedObject(so1->obj);
+ dec2 = so2->obj->encoding == REDIS_ENCODING_RAW ?
+ so2->obj : getDecodedObject(so2->obj);
+ cmp = strcoll(dec1->ptr,dec2->ptr);
+ if (dec1 != so1->obj) decrRefCount(dec1);
+ if (dec2 != so2->obj) decrRefCount(dec2);
+ }
}
}
return server.sort_desc ? -cmp : cmp;
@@ -3543,13 +3712,33 @@ static void sortCommand(redisClient *c) {
byval = lookupKeyByPattern(c->db,sortby,vector[j].obj);
if (!byval || byval->type != REDIS_STRING) continue;
if (alpha) {
- vector[j].u.cmpobj = byval;
- incrRefCount(byval);
+ if (byval->encoding == REDIS_ENCODING_RAW) {
+ vector[j].u.cmpobj = byval;
+ incrRefCount(byval);
+ } else {
+ vector[j].u.cmpobj = getDecodedObject(byval);
+ }
} else {
- vector[j].u.score = strtod(byval->ptr,NULL);
+ if (byval->encoding == REDIS_ENCODING_RAW) {
+ vector[j].u.score = strtod(byval->ptr,NULL);
+ } else {
+ if (byval->encoding == REDIS_ENCODING_INT)
+ vector[j].u.score = (long)byval->ptr;
+ else
+ assert(1 != 1);
+ }
}
} else {
- if (!alpha) vector[j].u.score = strtod(vector[j].obj->ptr,NULL);
+ if (!alpha) {
+ if (vector[j].obj->encoding == REDIS_ENCODING_RAW)
+ vector[j].u.score = strtod(vector[j].obj->ptr,NULL);
+ else {
+ if (vector[j].obj->encoding == REDIS_ENCODING_INT)
+ vector[j].u.score = (long) vector[j].obj->ptr;
+ else
+ assert(1 != 1);
+ }
+ }
}
}
}
@@ -3581,8 +3770,7 @@ static void sortCommand(redisClient *c) {
for (j = start; j <= end; j++) {
listNode *ln;
if (!getop) {
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",
- sdslen(vector[j].obj->ptr)));
+ addReplyBulkLen(c,vector[j].obj);
addReply(c,vector[j].obj);
addReply(c,shared.crlf);
}
@@ -3596,8 +3784,7 @@ static void sortCommand(redisClient *c) {
if (!val || val->type != REDIS_STRING) {
addReply(c,shared.nullbulk);
} else {
- addReplySds(c,sdscatprintf(sdsempty(),"$%d\r\n",
- sdslen(val->ptr)));
+ addReplyBulkLen(c,val);
addReply(c,val);
addReply(c,shared.crlf);
}
@@ -4178,8 +4365,8 @@ static void debugCommand(redisClient *c) {
key = dictGetEntryKey(de);
val = dictGetEntryVal(de);
addReplySds(c,sdscatprintf(sdsempty(),
- "+Key at:%p refcount:%d, value at:%p refcount:%d\r\n",
- key, key->refcount, val, val->refcount));
+ "+Key at:%p refcount:%d, value at:%p refcount:%d encoding:%d\r\n",
+ key, key->refcount, val, val->refcount, val->encoding));
} else {
addReplySds(c,sdsnew(
"-ERR Syntax error, try DEBUG [SEGFAULT|OBJECT <key>]\r\n"));
@@ -4188,13 +4375,18 @@ static void debugCommand(redisClient *c) {
#ifdef HAVE_BACKTRACE
static struct redisFunctionSym symsTable[] = {
+{"dictEncObjKeyCompare", (unsigned long)dictEncObjKeyCompare},
+{"dictEncObjHash", (unsigned long)dictEncObjHash},
+{"incrDecrCommand", (unsigned long)incrDecrCommand},
{"freeStringObject", (unsigned long)freeStringObject},
{"freeListObject", (unsigned long)freeListObject},
{"freeSetObject", (unsigned long)freeSetObject},
{"decrRefCount", (unsigned long)decrRefCount},
{"createObject", (unsigned long)createObject},
{"freeClient", (unsigned long)freeClient},
{"rdbLoad", (unsigned long)rdbLoad},
+{"rdbSaveStringObject", (unsigned long)rdbSaveStringObject},
+{"rdbSaveStringObjectRaw", (unsigned long)rdbSaveStringObjectRaw},
{"addReply", (unsigned long)addReply},
{"addReplySds", (unsigned long)addReplySds},
{"incrRefCount", (unsigned long)incrRefCount},
@@ -4203,6 +4395,8 @@ static struct redisFunctionSym symsTable[] = {
{"replicationFeedSlaves", (unsigned long)replicationFeedSlaves},
{"syncWithMaster", (unsigned long)syncWithMaster},
{"tryObjectSharing", (unsigned long)tryObjectSharing},
+{"tryObjectEncoding", (unsigned long)tryObjectEncoding},
+{"getDecodedObject", (unsigned long)getDecodedObject},
{"removeExpire", (unsigned long)removeExpire},
{"expireIfNeeded", (unsigned long)expireIfNeeded},
{"deleteIfVolatile", (unsigned long)deleteIfVolatile},

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