Redis server console output clarification? -

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i'm looking @ redis output console , i'm trying understand displayed info : (didn't find info in quick guide)

so redis-server.exe outputs : 

/*1*/   [2476] 24 apr 11:46:28 # open data file dump.rdb: no such file or directory /*2*/   [2476] 24 apr 11:46:28 * server ready accept connections on port 6379 /*3*/   [2476] 24 apr 11:42:35 - 1 clients connected (0 slaves), 1188312 bytes in use /*4*/   [2476] 24 apr 11:42:40 - db 0: 1 keys (0 volatile) in 4 slots ht.
  • regarding line #1 - dump.rdb file used ? data ?
  • what [2476] number ? not port since line #2 tells port 6379
  • what (0 slaves) means ?
  • in line #3 - 1188312 bytes used - max value i'd know overflows ...? whole databases ?
  • line #3 (0 volatile) means ?
  • line #4 - why have 4 slots ht ? have no data yet

[2476] - process id

dump.rdb - redis can persist data snapshoting, dump.rdb default file name http://redis.io/topics/persistence

0 slaves - redis can work in master-slave mode, 0 slaves informs there no slave servers connected

1188312 bytes in use - total number of bytes allocated redis using allocator

0 volatile - redis can set keys expiration time, count of them

4 slots ht - current hash table size


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