diff -u -r ../redis-5.0.0/src/server.h ./src/server.h
--- ../redis-5.0.0/src/server.h	2018-10-17 15:31:39.000000000 +0000
+++ ./src/server.h	2018-10-18 17:32:04.424841206 +0000
@@ -84,7 +84,7 @@
 #define CONFIG_MAX_HZ            500
 #define MAX_CLIENTS_PER_CLOCK_TICK 200          /* HZ is adapted based on that. */
 #define CONFIG_DEFAULT_SERVER_PORT        6379  /* TCP port. */
-#define CONFIG_DEFAULT_TCP_BACKLOG       511    /* TCP listen backlog. */
+#define CONFIG_DEFAULT_TCP_BACKLOG       127    /* TCP listen backlog. */
 #define CONFIG_DEFAULT_CLIENT_TIMEOUT       0   /* Default client timeout: infinite */
 #define CONFIG_DEFAULT_DBNUM     16
 #define CONFIG_MAX_LINE    1024
@@ -100,7 +100,7 @@
 #define AOF_READ_DIFF_INTERVAL_BYTES (1024*10)
 #define CONFIG_DEFAULT_SLOWLOG_LOG_SLOWER_THAN 10000
 #define CONFIG_DEFAULT_SLOWLOG_MAX_LEN 128
-#define CONFIG_DEFAULT_MAX_CLIENTS 10000
+#define CONFIG_DEFAULT_MAX_CLIENTS 512
 #define CONFIG_AUTHPASS_MAX_LEN 512
 #define CONFIG_DEFAULT_SLAVE_PRIORITY 100
 #define CONFIG_DEFAULT_REPL_TIMEOUT 60