diff --git a/src/networking.c b/src/networking.c
index 277173397..d6a62c56a 100644
--- a/src/networking.c
+++ b/src/networking.c
@@ -2438,6 +2438,7 @@ int processMultibulkBuffer(client *c) {
     char *newline = NULL;
     int ok;
     long long ll;
+    size_t querybuf_len = sdslen(c->querybuf); /* Cache sdslen */
 
     if (c->multibulklen == 0) {
         /* The client should have been reset */
@@ -2446,14 +2447,14 @@ int processMultibulkBuffer(client *c) {
         /* Multi bulk length cannot be read without a \r\n */
         newline = strchr(c->querybuf+c->qb_pos,'\r');
         if (newline == NULL) {
-            if (sdslen(c->querybuf)-c->qb_pos > PROTO_INLINE_MAX_SIZE) {
+            if (querybuf_len-c->qb_pos > PROTO_INLINE_MAX_SIZE) {
                 c->read_error = CLIENT_READ_TOO_BIG_MBULK_COUNT_STRING;
             }
             return C_ERR;
         }
 
         /* Buffer should also contain \n */
-        if (newline-(c->querybuf+c->qb_pos) > (ssize_t)(sdslen(c->querybuf)-c->qb_pos-2))
+        if (newline-(c->querybuf+c->qb_pos) > (ssize_t)(querybuf_len-c->qb_pos-2))
             return C_ERR;
 
         /* We know for sure there is a whole line since newline != NULL,
@@ -2494,7 +2495,7 @@ int processMultibulkBuffer(client *c) {
         if (c->bulklen == -1) {
             newline = strchr(c->querybuf+c->qb_pos,'\r');
             if (newline == NULL) {
-                if (sdslen(c->querybuf)-c->qb_pos > PROTO_INLINE_MAX_SIZE) {
+                if (querybuf_len-c->qb_pos > PROTO_INLINE_MAX_SIZE) {
                     c->read_error = CLIENT_READ_TOO_BIG_BUCK_COUNT_STRING;
                     return C_ERR;
                 }
@@ -2502,7 +2503,7 @@ int processMultibulkBuffer(client *c) {
             }
 
             /* Buffer should also contain \n */
-            if (newline-(c->querybuf+c->qb_pos) > (ssize_t)(sdslen(c->querybuf)-c->qb_pos-2))
+            if (newline-(c->querybuf+c->qb_pos) > (ssize_t)(querybuf_len-c->qb_pos-2))
                 break;
 
             if (c->querybuf[c->qb_pos] != '$') {
@@ -2535,23 +2536,24 @@ int processMultibulkBuffer(client *c) {
                  * or equal to ll+2. If the data length is greater than
                  * ll+2, trimming querybuf is just a waste of time, because
                  * at this time the querybuf contains not only our bulk. */
-                if (sdslen(c->querybuf)-c->qb_pos <= (size_t)ll+2) {
+                if (querybuf_len-c->qb_pos <= (size_t)ll+2) {
                     sdsrange(c->querybuf,c->qb_pos,-1);
+                    querybuf_len = sdslen(c->querybuf);
                     c->qb_pos = 0;
                     /* Hint the sds library about the amount of bytes this string is
                      * going to contain. */
-                    c->querybuf = sdsMakeRoomForNonGreedy(c->querybuf,ll+2-sdslen(c->querybuf));
+                    c->querybuf = sdsMakeRoomForNonGreedy(c->querybuf,ll+2-querybuf_len);
                     /* We later set the peak to the used portion of the buffer, but here we over
                      * allocated because we know what we need, make sure it'll not be shrunk before used. */
                     if (c->querybuf_peak < (size_t)ll + 2) c->querybuf_peak = ll + 2;
+                    querybuf_len = sdslen(c->querybuf); /* Update cached length */
                 }
             }
             c->bulklen = ll;
         }
 
         /* Read bulk argument */
-        if (sdslen(c->querybuf)-c->qb_pos < (size_t)(c->bulklen+2)) {
-            /* Not enough data (+2 == trailing \r\n) */
+        if (querybuf_len-c->qb_pos < (size_t)(c->bulklen+2)) {
             break;
         } else {
             /* Check if we have space in argv, grow if needed */
@@ -2567,7 +2569,7 @@ int processMultibulkBuffer(client *c) {
             if (!(c->flags & CLIENT_MASTER) &&
                 c->qb_pos == 0 &&
                 c->bulklen >= PROTO_MBULK_BIG_ARG &&
-                sdslen(c->querybuf) == (size_t)(c->bulklen+2))
+                querybuf_len == (size_t)(c->bulklen+2))
             {
                 c->argv[c->argc++] = createObject(OBJ_STRING,c->querybuf);
                 c->argv_len_sum += c->bulklen;
@@ -2576,6 +2578,7 @@ int processMultibulkBuffer(client *c) {
                  * likely... */
                 c->querybuf = sdsnewlen(SDS_NOINIT,c->bulklen+2);
                 sdsclear(c->querybuf);
+                querybuf_len = sdslen(c->querybuf); /* Update cached length */
             } else {
                 c->argv[c->argc++] =
                     createStringObject(c->querybuf+c->qb_pos,c->bulklen);