RDB and Cache gets cleared automatically

Hi Team,
On load of Redis, data gets cached. My java API fetch data from cache for further processing. After some time, cache gets completely erased automatically. When I checked RDB file size, that also became 0kb, which means content in RDB file is also erased. Please find redis-log.txt herewith

[3244] 04 Oct 04:34:26.071 * Redis 3.0.503 (00000000/0) 64 bit, standalone mode, port 6379, pid 3244 ready to start.
[3244] 04 Oct 04:34:26.103 # Server started, Redis version 3.0.503
[3244] 04 Oct 04:34:26.118 * DB loaded from disk: 0.019 seconds
[3244] 04 Oct 04:34:26.118 * The server is now ready to accept connections on port 6379
[3244] 04 Oct 04:55:33.878 * 1 changes in 900 seconds. Saving...
[3244] 04 Oct 04:55:34.465 * Background saving started by pid 2260
[3244] 04 Oct 04:55:35.633 # fork operation complete
[3244] 04 Oct 04:55:35.950 * Background saving terminated with success
[3244] 04 Oct 05:10:36.076 * 1 changes in 900 seconds. Saving...
[3244] 04 Oct 05:10:36.080 * Background saving started by pid 2836
[3244] 04 Oct 05:10:36.383 # fork operation complete
[3244] 04 Oct 05:10:36.384 * Background saving terminated with success
[3244] 04 Oct 05:25:37.042 * 1 changes in 900 seconds. Saving...
[3244] 04 Oct 05:25:37.046 * Background saving started by pid 7860
[3244] 04 Oct 05:25:37.247 # fork operation complete
[3244] 04 Oct 05:25:37.248 * Background saving terminated with success
[3244] 04 Oct 06:07:57.676 * 1 changes in 900 seconds. Saving...
[3244] 04 Oct 06:07:57.680 * Background saving started by pid 10168
[3244] 04 Oct 06:07:57.883 # fork operation complete
[3244] 04 Oct 06:07:57.888 * Background saving terminated with success
[3244] 04 Oct 06:25:51.161 * 1 changes in 900 seconds. Saving...
[3244] 04 Oct 06:25:51.165 * Background saving started by pid 9412
[3244] 04 Oct 06:25:51.366 # fork operation complete
[3244] 04 Oct 06:25:51.376 * Background saving terminated with success
[3244] 04 Oct 06:30:52.071 * 10 changes in 300 seconds. Saving...
[3244] 04 Oct 06:30:52.119 * Background saving started by pid 1400
[3244] 04 Oct 06:30:52.422 # fork operation complete
[3244] 04 Oct 06:30:52.423 * Background saving terminated with success
[3244] 04 Oct 06:45:53.089 * 1 changes in 900 seconds. Saving...
[3244] 04 Oct 06:45:53.094 * Background saving started by pid 3368
[3244] 04 Oct 06:45:53.295 # fork operation complete
[3244] 04 Oct 06:45:53.302 * Background saving terminated with success
[3244] 04 Oct 07:07:24.355 * 1 changes in 900 seconds. Saving...
[3244] 04 Oct 07:07:24.358 * Background saving started by pid 6468
[3244] 04 Oct 07:07:24.661 # fork operation complete
[3244] 04 Oct 07:07:24.662 * Background saving terminated with success
[3244] 04 Oct 07:22:25.065 * 1 changes in 900 seconds. Saving...
[3244] 04 Oct 07:22:25.069 * Background saving started by pid 8616
[3244] 04 Oct 07:22:25.371 # fork operation complete
[3244] 04 Oct 07:22:25.372 * Background saving terminated with success
[3244] 04 Oct 07:49:02.794 * 1 changes in 900 seconds. Saving...
[3244] 04 Oct 07:49:02.799 * Background saving started by pid 1932
[3244] 04 Oct 07:49:03.100 # fork operation complete
[3244] 04 Oct 07:49:03.101 * Background saving terminated with success
[3244] 04 Oct 07:54:04.013 * 10 changes in 300 seconds. Saving...
[3244] 04 Oct 07:54:04.061 * Background saving started by pid 7228
[3244] 04 Oct 07:54:04.263 # fork operation complete
[3244] 04 Oct 07:54:04.274 * Background saving terminated with success
[3244] 04 Oct 10:53:34.041 * 1 changes in 900 seconds. Saving...
[3244] 04 Oct 10:53:34.046 * Background saving started by pid 8472
[3244] 04 Oct 10:53:34.348 # fork operation complete
[3244] 04 Oct 10:53:34.349 * Background saving terminated with success
[3244] 04 Oct 12:34:13.560 * 1 changes in 900 seconds. Saving...
[3244] 04 Oct 12:34:13.564 * Background saving started by pid 9676
[3244] 04 Oct 12:34:13.865 # fork operation complete
[3244] 04 Oct 12:34:13.867 * Background saving terminated with success
[3244] 04 Oct 12:49:14.015 * 1 changes in 900 seconds. Saving...
[3244] 04 Oct 12:49:14.019 * Background saving started by pid 10176
[3244] 04 Oct 12:49:14.320 # fork operation complete
[3244] 04 Oct 12:49:14.321 * Background saving terminated with success
[3244] 04 Oct 12:54:15.066 * 10 changes in 300 seconds. Saving...
[3244] 04 Oct 12:54:15.114 * Background saving started by pid 2864
[3244] 04 Oct 12:54:15.415 # fork operation complete
[3244] 04 Oct 12:54:15.416 * Background saving terminated with success
[3244] 04 Oct 13:09:16.048 * 1 changes in 900 seconds. Saving...
[3244] 04 Oct 13:09:16.052 * Background saving started by pid 992
[3244] 04 Oct 13:09:16.356 # fork operation complete
[3244] 04 Oct 13:09:16.357 * Background saving terminated with success
[3244] 04 Oct 13:18:12.753 * 10 changes in 300 seconds. Saving...
[3244] 04 Oct 13:18:12.759 * Background saving started by pid 8504
[3244] 04 Oct 13:18:13.062 # fork operation complete
[3244] 04 Oct 13:18:13.063 * Background saving terminated with success
[3244] 04 Oct 13:23:14.000 * 10 changes in 300 seconds. Saving...
[3244] 04 Oct 13:23:14.050 * Background saving started by pid 4384
[3244] 04 Oct 13:23:14.252 # fork operation complete
[3244] 04 Oct 13:23:14.255 * Background saving terminated with success
[3244] 04 Oct 13:28:15.059 * 10 changes in 300 seconds. Saving...
[3244] 04 Oct 13:28:15.064 * Background saving started by pid 8908
[3244] 04 Oct 13:28:15.366 # fork operation complete
[3244] 04 Oct 13:28:15.367 * Background saving terminated with success
[3244] 04 Oct 13:33:16.031 * 10 changes in 300 seconds. Saving...
[3244] 04 Oct 13:33:16.035 * Background saving started by pid 8916
[3244] 04 Oct 13:33:16.337 # fork operation complete
[3244] 04 Oct 13:33:16.338 * Background saving terminated with success
[3244] 04 Oct 13:38:17.053 * 10 changes in 300 seconds. Saving...
[3244] 04 Oct 13:38:17.057 * Background saving started by pid 4752
[3244] 04 Oct 13:38:17.258 # fork operation complete
[3244] 04 Oct 13:38:17.263 * Background saving terminated with success
[3244] 04 Oct 13:53:18.034 * 1 changes in 900 seconds. Saving...
[3244] 04 Oct 13:53:18.037 * Background saving started by pid 4612
[3244] 04 Oct 13:53:18.239 # fork operation complete
[3244] 04 Oct 13:53:18.240 * Background saving terminated with success
[3244] 04 Oct 13:58:19.043 * 10 changes in 300 seconds. Saving...
[3244] 04 Oct 13:58:19.090 * Background saving started by pid 8464
[3244] 04 Oct 13:58:19.293 # fork operation complete
[3244] 04 Oct 13:58:19.294 * Background saving terminated with success
[3244] 04 Oct 14:05:11.810 * 10 changes in 300 seconds. Saving...
[3244] 04 Oct 14:05:11.816 * Background saving started by pid 9804
[3244] 04 Oct 14:05:12.116 # fork operation complete
[3244] 04 Oct 14:05:12.117 * Background saving terminated with success
[3244] 04 Oct 14:10:13.005 * 10 changes in 300 seconds. Saving...
[3244] 04 Oct 14:10:13.050 * Background saving started by pid 6192
[3244] 04 Oct 14:10:13.353 # fork operation complete
[3244] 04 Oct 14:10:13.354 * Background saving terminated with success
[3244] 04 Oct 14:25:14.052 * 1 changes in 900 seconds. Saving...
[3244] 04 Oct 14:25:14.056 * Background saving started by pid 8520
[3244] 04 Oct 14:25:14.358 # fork operation complete
[3244] 04 Oct 14:25:14.359 * Background saving terminated with success
[3524] 05 Oct 04:36:59.956 * Redis 3.0.503 (00000000/0) 64 bit, standalone mode, port 6379, pid 3524 ready to start.
[3524] 05 Oct 04:36:59.971 # Server started, Redis version 3.0.503
[3524] 05 Oct 04:36:59.987 * DB loaded from disk: 0.015 seconds
[3524] 05 Oct 04:36:59.987 * The server is now ready to accept connections on port 6379
[3524] 05 Oct 04:52:00.003 * 1 changes in 900 seconds. Saving...
[3524] 05 Oct 04:52:00.097 * Background saving started by pid 5060
[3524] 05 Oct 04:52:00.315 # fork operation complete
[3524] 05 Oct 04:52:00.315 * Background saving terminated with success
[3524] 05 Oct 05:12:13.196 * 1 changes in 900 seconds. Saving...
[3524] 05 Oct 05:12:13.200 * Background saving started by pid 7080
[3524] 05 Oct 05:12:13.421 # fork operation complete
[3524] 05 Oct 05:12:13.421 * Background saving terminated with success
[3524] 05 Oct 06:30:08.888 * 1 changes in 900 seconds. Saving...
[3524] 05 Oct 06:30:08.890 * Background saving started by pid 4084
[3524] 05 Oct 06:30:09.090 # fork operation complete
[3524] 05 Oct 06:30:09.090 * Background saving terminated with success
[3524] 05 Oct 06:35:10.060 * 10 changes in 300 seconds. Saving...
[3524] 05 Oct 06:35:10.094 * Background saving started by pid 8488
[3524] 05 Oct 06:35:10.323 # fork operation complete
[3524] 05 Oct 06:35:10.323 * Background saving terminated with success
[3524] 05 Oct 06:50:11.061 * 1 changes in 900 seconds. Saving...
[3524] 05 Oct 06:50:11.061 * Background saving started by pid 7024
[3524] 05 Oct 06:50:11.288 # fork operation complete
[3524] 05 Oct 06:50:11.288 * Background saving terminated with success
[3524] 05 Oct 07:05:12.048 * 1 changes in 900 seconds. Saving...
[3524] 05 Oct 07:05:12.048 * Background saving started by pid 1236
[3524] 05 Oct 07:05:12.275 # fork operation complete
[3524] 05 Oct 07:05:12.275 * Background saving terminated with success
[3524] 05 Oct 07:20:13.057 * 1 changes in 900 seconds. Saving...
[3524] 05 Oct 07:20:13.057 * Background saving started by pid 9180
[3524] 05 Oct 07:20:13.287 # fork operation complete
[3524] 05 Oct 07:20:13.288 * Background saving terminated with success
[3524] 05 Oct 11:46:42.927 * 1 changes in 900 seconds. Saving...
[3524] 05 Oct 11:46:42.927 * Background saving started by pid 7616
[3524] 05 Oct 11:46:43.157 # fork operation complete
[3524] 05 Oct 11:46:43.158 * Background saving terminated with success
[3524] 05 Oct 11:52:32.555 * 10 changes in 300 seconds. Saving...
[3524] 05 Oct 11:52:32.555 * Background saving started by pid 4064
[3524] 05 Oct 11:52:32.780 # fork operation complete
[3524] 05 Oct 11:52:32.780 * Background saving terminated with success
[3524] 05 Oct 11:58:13.152 * 10 changes in 300 seconds. Saving...
[3524] 05 Oct 11:58:13.152 * Background saving started by pid 4084
[3524] 05 Oct 11:58:13.367 # fork operation complete
[3524] 05 Oct 11:58:13.367 * Background saving terminated with success
[3524] 05 Oct 12:20:26.493 * 1 changes in 900 seconds. Saving...
[3524] 05 Oct 12:20:26.493 * Background saving started by pid 7328
[3524] 05 Oct 12:20:26.718 # fork operation complete
[3524] 05 Oct 12:20:26.718 * Background saving terminated with success
[3524] 05 Oct 12:25:27.027 * 10 changes in 300 seconds. Saving...
[3524] 05 Oct 12:25:27.068 * Background saving started by pid 8616
[3524] 05 Oct 12:25:27.282 # fork operation complete
[3524] 05 Oct 12:25:27.282 * Background saving terminated with success
[3524] 05 Oct 12:30:28.053 * 10 changes in 300 seconds. Saving...
[3524] 05 Oct 12:30:28.053 * Background saving started by pid 8808
[3524] 05 Oct 12:30:28.284 # fork operation complete
[3524] 05 Oct 12:30:28.284 * Background saving terminated with success
[3524] 05 Oct 12:45:29.088 * 1 changes in 900 seconds. Saving...
[3524] 05 Oct 12:45:29.138 * Background saving started by pid 8476
[3524] 05 Oct 12:45:29.362 # fork operation complete
[3524] 05 Oct 12:45:29.362 * Background saving terminated with success
[3524] 05 Oct 13:00:30.105 * 1 changes in 900 seconds. Saving...
[3524] 05 Oct 13:00:30.105 * Background saving started by pid 1972
[3524] 05 Oct 13:00:30.328 # fork operation complete
[3524] 05 Oct 13:00:30.328 * Background saving terminated with success
[3524] 05 Oct 13:32:12.062 * 1 changes in 900 seconds. Saving...
[3524] 05 Oct 13:32:12.065 * Background saving started by pid 5476
[3524] 05 Oct 13:32:12.287 # fork operation complete
[3524] 05 Oct 13:32:12.287 * Background saving terminated with success
[3524] 05 Oct 14:15:05.637 * 1 changes in 900 seconds. Saving...
[3524] 05 Oct 14:15:05.639 * Background saving started by pid 4004
[3524] 05 Oct 14:15:05.854 # fork operation complete
[3524] 05 Oct 14:15:05.854 * Background saving terminated with success
[3524] 05 Oct 14:30:06.084 * 1 changes in 900 seconds. Saving...
[3524] 05 Oct 14:30:06.085 * Background saving started by pid 5468
[3524] 05 Oct 14:30:06.312 # fork operation complete
[3524] 05 Oct 14:30:06.312 * Background saving terminated with success
[3524] 05 Oct 14:45:07.103 * 1 changes in 900 seconds. Saving...
[3524] 05 Oct 14:45:07.136 * Background saving started by pid 2524
[3524] 05 Oct 14:45:07.355 # fork operation complete
[3524] 05 Oct 14:45:07.355 * Background saving terminated with success
[3524] 05 Oct 15:43:07.716 * 1 changes in 900 seconds. Saving...
[3524] 05 Oct 15:43:07.752 * Background saving started by pid 7088
[3524] 05 Oct 15:43:07.979 # fork operation complete
[3524] 05 Oct 15:43:07.981 * Background saving terminated with success
[3524] 05 Oct 15:50:53.171 * 10 changes in 300 seconds. Saving...
[3524] 05 Oct 15:50:53.171 * Background saving started by pid 4412
[3524] 05 Oct 15:50:53.386 # fork operation complete
[3524] 05 Oct 15:50:53.386 * Background saving terminated with success
[3524] 05 Oct 15:55:54.038 * 10 changes in 300 seconds. Saving...
[3524] 05 Oct 15:55:54.069 * Background saving started by pid 6588
[3524] 05 Oct 15:55:54.293 # fork operation complete
[3524] 05 Oct 15:55:54.293 * Background saving terminated with success
[3524] 05 Oct 16:00:55.097 * 10 changes in 300 seconds. Saving...
[3524] 05 Oct 16:00:55.098 * Background saving started by pid 6592
[3524] 05 Oct 16:00:55.325 # fork operation complete
[3524] 05 Oct 16:00:55.327 * Background saving terminated with success
[3524] 05 Oct 16:05:56.080 * 10 changes in 300 seconds. Saving...
[3524] 05 Oct 16:05:56.080 * Background saving started by pid 9360
[3524] 05 Oct 16:05:56.295 # fork operation complete
[3524] 05 Oct 16:05:56.296 * Background saving terminated with success
[3524] 05 Oct 16:10:57.090 * 10 changes in 300 seconds. Saving...
[3524] 05 Oct 16:10:57.090 * Background saving started by pid 5216
[3524] 05 Oct 16:10:57.308 # fork operation complete
[3524] 05 Oct 16:10:57.308 * Background saving terminated with success
[3524] 05 Oct 16:15:58.009 * 10 changes in 300 seconds. Saving...
[3524] 05 Oct 16:15:58.009 * Background saving started by pid 10188
[3524] 05 Oct 16:15:58.250 # fork operation complete
[3524] 05 Oct 16:15:58.250 * Background saving terminated with success
[3524] 05 Oct 16:20:59.081 * 10 changes in 300 seconds. Saving...
[3524] 05 Oct 16:20:59.081 * Background saving started by pid 7136
[3524] 05 Oct 16:20:59.305 # fork operation complete
[3524] 05 Oct 16:20:59.305 * Background saving terminated with success
[3524] 05 Oct 16:26:00.102 * 10 changes in 300 seconds. Saving...
[3524] 05 Oct 16:26:00.106 * Background saving started by pid 9528
[3524] 05 Oct 16:26:00.330 # fork operation complete
[3524] 05 Oct 16:26:00.330 * Background saving terminated with success
[3524] 05 Oct 16:31:01.044 * 10 changes in 300 seconds. Saving...
[3524] 05 Oct 16:31:01.044 * Background saving started by pid 10232
[3524] 05 Oct 16:31:01.258 # fork operation complete
[3524] 05 Oct 16:31:01.260 * Background saving terminated with success
[3524] 05 Oct 16:36:02.080 * 10 changes in 300 seconds. Saving...
[3524] 05 Oct 16:36:02.080 * Background saving started by pid 8592
[3524] 05 Oct 16:36:02.300 # fork operation complete
[3524] 05 Oct 16:36:02.300 * Background saving terminated with success
[3524] 05 Oct 16:46:38.178 * 10 changes in 300 seconds. Saving...
[3524] 05 Oct 16:46:38.209 * Background saving started by pid 6444
[3524] 05 Oct 16:46:38.434 # fork operation complete
[3524] 05 Oct 16:46:38.434 * Background saving terminated with success
[3524] 05 Oct 16:51:39.029 * 10 changes in 300 seconds. Saving...
[3524] 05 Oct 16:51:39.029 * Background saving started by pid 8836
[3524] 05 Oct 16:51:39.255 # fork operation complete
[3524] 05 Oct 16:51:39.257 * Background saving terminated with success
[3524] 05 Oct 17:06:40.096 * 1 changes in 900 seconds. Saving...
[3524] 05 Oct 17:06:40.096 * Background saving started by pid 5180
[3524] 05 Oct 17:06:40.312 # fork operation complete
[3524] 05 Oct 17:06:40.312 * Background saving terminated with success
[3348] 06 Oct 04:04:48.011 * Redis 3.0.503 (00000000/0) 64 bit, standalone mode, port 6379, pid 3348 ready to start.
[3348] 06 Oct 04:04:48.011 # Server started, Redis version 3.0.503
[3348] 06 Oct 04:04:48.027 * DB loaded from disk: 0.008 seconds
[3348] 06 Oct 04:04:48.027 * The server is now ready to accept connections on port 6379
[3348] 06 Oct 04:14:11.020 * 10 changes in 300 seconds. Saving...
[3348] 06 Oct 04:14:11.134 * Background saving started by pid 7060
[3348] 06 Oct 04:14:11.466 # fork operation complete
[3348] 06 Oct 04:14:11.466 * Background saving terminated with success
[3348] 06 Oct 04:19:12.096 * 10 changes in 300 seconds. Saving...
[3348] 06 Oct 04:19:12.149 * Background saving started by pid 6700
[3348] 06 Oct 04:19:12.451 # fork operation complete
[3348] 06 Oct 04:19:12.458 * Background saving terminated with success
[3348] 06 Oct 05:35:12.125 * 1 changes in 900 seconds. Saving...
[3348] 06 Oct 05:35:12.130 * Background saving started by pid 928
[3348] 06 Oct 05:35:12.462 # fork operation complete
[3348] 06 Oct 05:35:12.463 * Background saving terminated with success
[3348] 06 Oct 05:40:13.070 * 10 changes in 300 seconds. Saving...
[3348] 06 Oct 05:40:13.116 * Background saving started by pid 4916
[3348] 06 Oct 05:40:13.317 # fork operation complete
[3348] 06 Oct 05:40:13.325 * Background saving terminated with success
[3348] 06 Oct 05:45:14.088 * 10 changes in 300 seconds. Saving...
[3348] 06 Oct 05:45:14.091 * Background saving started by pid 5176
[3348] 06 Oct 05:45:14.394 # fork operation complete
[3348] 06 Oct 05:45:14.395 * Background saving terminated with success
[3348] 06 Oct 05:51:33.799 * 10 changes in 300 seconds. Saving...
[3348] 06 Oct 05:51:33.802 * Background saving started by pid 3416
[3348] 06 Oct 05:51:34.104 # fork operation complete
[3348] 06 Oct 05:51:34.105 * Background saving terminated with success
[3348] 06 Oct 05:57:44.301 * 10 changes in 300 seconds. Saving...
[3348] 06 Oct 05:57:44.305 * Background saving started by pid 3580
[3348] 06 Oct 05:57:44.607 # fork operation complete
[3348] 06 Oct 05:57:44.608 * Background saving terminated with success
[3348] 06 Oct 06:02:45.050 * 10 changes in 300 seconds. Saving...
[3348] 06 Oct 06:02:45.099 * Background saving started by pid 4424
[3348] 06 Oct 06:02:45.302 # fork operation complete
[3348] 06 Oct 06:02:45.312 * Background saving terminated with success
[3348] 06 Oct 06:07:46.041 * 10 changes in 300 seconds. Saving...
[3348] 06 Oct 06:07:46.045 * Background saving started by pid 7556
[3348] 06 Oct 06:07:46.348 # fork operation complete
[3348] 06 Oct 06:07:46.349 * Background saving terminated with success
[3348] 06 Oct 06:12:47.044 * 10 changes in 300 seconds. Saving...
[3348] 06 Oct 06:12:47.048 * Background saving started by pid 6160
[3348] 06 Oct 06:12:47.349 # fork operation complete
[3348] 06 Oct 06:12:47.350 * Background saving terminated with success
[3348] 06 Oct 06:19:53.275 * 10 changes in 300 seconds. Saving...
[3348] 06 Oct 06:19:53.279 * Background saving started by pid 8624
[3348] 06 Oct 06:19:54.007 # fork operation complete
[3348] 06 Oct 06:19:54.009 * Background saving terminated with success
[3348] 06 Oct 06:34:55.071 * 1 changes in 900 seconds. Saving...
[3348] 06 Oct 06:34:55.074 * Background saving started by pid 10212
[3348] 06 Oct 06:34:55.377 # fork operation complete
[3348] 06 Oct 06:34:55.379 * Background saving terminated with success
[3348] 06 Oct 06:39:56.083 * 10 changes in 300 seconds. Saving...
[3348] 06 Oct 06:39:56.130 * Background saving started by pid 10512
[3348] 06 Oct 06:39:56.332 # fork operation complete
[3348] 06 Oct 06:39:56.337 * Background saving terminated with success
[3348] 06 Oct 06:54:57.060 * 1 changes in 900 seconds. Saving...
[3348] 06 Oct 06:54:57.064 * Background saving started by pid 9704
[3348] 06 Oct 06:54:57.366 # fork operation complete
[3348] 06 Oct 06:54:57.367 * Background saving terminated with success
[3348] 06 Oct 07:09:58.008 * 1 changes in 900 seconds. Saving...
[3348] 06 Oct 07:09:58.055 * Background saving started by pid 12104
[3348] 06 Oct 07:09:58.358 # fork operation complete
[3348] 06 Oct 07:09:58.359 * Background saving terminated with success
[3348] 06 Oct 07:24:59.073 * 1 changes in 900 seconds. Saving...
[3348] 06 Oct 07:24:59.078 * Background saving started by pid 6956
[3348] 06 Oct 07:24:59.279 # fork operation complete
[3348] 06 Oct 07:24:59.286 * Background saving terminated with success
[3348] 06 Oct 07:59:58.616 * SLAVE OF xxx enabled (user request from 'id=66 addr=xxx fd=12 name= age=0 idle=0 flags=N db=0 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=32768 obl=0 oll=0 omem=0 events=r cmd=slaveof')
[3348] 06 Oct 07:59:58.965 * Connecting to MASTER xxx
[3348] 06 Oct 07:59:58.966 * MASTER <-> SLAVE sync started
[3348] 06 Oct 08:00:00.458 * Non blocking connect for SYNC fired the event.
[3348] 06 Oct 08:00:00.458 # Sending command to master in replication handshake: -Writing to master: Unknown error
[3348] 06 Oct 08:00:00.978 * Connecting to MASTER xxx
[3348] 06 Oct 08:00:00.979 * MASTER <-> SLAVE sync started
[3348] 06 Oct 08:00:01.141 * Non blocking connect for SYNC fired the event.
[3348] 06 Oct 08:00:01.303 * Master replied to PING, replication can continue...
[3348] 06 Oct 08:00:01.627 * Partial resynchronization not possible (no cached master)
[3348] 06 Oct 08:00:01.797 * Full resync from master: ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ:0
[3348] 06 Oct 08:00:01.799 * MASTER <-> SLAVE sync: receiving 5375384 bytes from master
[3348] 06 Oct 08:00:03.269 * MASTER <-> SLAVE sync: Flushing old data
[3348] 06 Oct 08:00:03.270 * MASTER <-> SLAVE sync: Loading DB in memory
[3348] 06 Oct 08:00:03.282 # Wrong signature trying to load DB from file
[3348] 06 Oct 08:00:03.282 # Failed trying to load the MASTER synchronization DB from disk
[3348] 06 Oct 08:00:04.087 * Connecting to MASTER xxx
[3348] 06 Oct 08:00:04.087 * MASTER <-> SLAVE sync started
[3348] 06 Oct 08:00:04.245 * Non blocking connect for SYNC fired the event.
[3348] 06 Oct 08:00:05.106 * MASTER MODE enabled (user request from 'id=66 addr=xxx fd=12 name= age=7 idle=0 flags=N db=0 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=32768 obl=0 oll=0 omem=0 events=r cmd=slaveof')
[3348] 06 Oct 08:00:05.788 * SLAVE OF xxx enabled (user request from 'id=67 addr=xxx fd=10 name= age=0 idle=0 flags=N db=0 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=32768 obl=0 oll=0 omem=0 events=r cmd=slaveof')
[3348] 06 Oct 08:00:06.101 * Connecting to MASTER xxx
[3348] 06 Oct 08:00:06.101 * MASTER <-> SLAVE sync started
[3348] 06 Oct 08:00:07.590 * Non blocking connect for SYNC fired the event.
[3348] 06 Oct 08:00:07.590 # Sending command to master in replication handshake: -Writing to master: Unknown error
[3348] 06 Oct 08:00:08.113 * Connecting to MASTER xxx
[3348] 06 Oct 08:00:08.114 * MASTER <-> SLAVE sync started
[3348] 06 Oct 08:00:08.279 * Non blocking connect for SYNC fired the event.
[3348] 06 Oct 08:00:08.441 * Master replied to PING, replication can continue...
[3348] 06 Oct 08:00:08.768 * Partial resynchronization not possible (no cached master)
[3348] 06 Oct 08:00:08.932 * Full resync from master: ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ:0
[3348] 06 Oct 08:00:08.933 * MASTER <-> SLAVE sync: receiving 42680 bytes from master
[3348] 06 Oct 08:00:09.100 * MASTER <-> SLAVE sync: Flushing old data
[3348] 06 Oct 08:00:09.100 * MASTER <-> SLAVE sync: Loading DB in memory
[3348] 06 Oct 08:00:09.107 # Wrong signature trying to load DB from file
[3348] 06 Oct 08:00:09.107 # Failed trying to load the MASTER synchronization DB from disk
[3348] 06 Oct 08:00:09.208 * Connecting to MASTER xxx
[3348] 06 Oct 08:00:09.208 * MASTER <-> SLAVE sync started
[3348] 06 Oct 08:00:09.371 * Non blocking connect for SYNC fired the event.
[3348] 06 Oct 08:00:11.097 * MASTER MODE enabled (user request from 'id=67 addr=xxx fd=10 name= age=6 idle=0 flags=N db=0 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=32768 obl=0 oll=0 omem=0 events=r cmd=slaveof')
[3348] 06 Oct 10:15:19.811 * 1 changes in 900 seconds. Saving...
[3348] 06 Oct 10:15:19.815 * Background saving started by pid 11552
[3348] 06 Oct 10:15:20.122 # fork operation complete
[3348] 06 Oct 10:15:20.123 * Background saving terminated with success
[3348] 06 Oct 10:20:57.989 * 10 changes in 300 seconds. Saving...
[3348] 06 Oct 10:20:57.993 * Background saving started by pid 9464
[3348] 06 Oct 10:20:58.193 # fork operation complete
[3348] 06 Oct 10:20:58.194 * Background saving terminated with success
[3348] 06 Oct 10:35:59.077 * 1 changes in 900 seconds. Saving...
[3348] 06 Oct 10:35:59.081 * Background saving started by pid 10772
[3348] 06 Oct 10:35:59.382 # fork operation complete
[3348] 06 Oct 10:35:59.383 * Background saving terminated with success
[3348] 06 Oct 10:43:19.432 * 10 changes in 300 seconds. Saving...
[3348] 06 Oct 10:43:19.436 * Background saving started by pid 9004
[3348] 06 Oct 10:43:19.738 # fork operation complete
[3348] 06 Oct 10:43:19.739 * Background saving terminated with success
[3348] 06 Oct 10:48:20.095 * 10 changes in 300 seconds. Saving...
[3348] 06 Oct 10:48:20.139 * Background saving started by pid 9468
[3348] 06 Oct 10:48:20.340 # fork operation complete
[3348] 06 Oct 10:48:20.341 * Background saving terminated with success
[3348] 06 Oct 10:54:41.938 * 10 changes in 300 seconds. Saving...
[3348] 06 Oct 10:54:41.941 * Background saving started by pid 8396
[3348] 06 Oct 10:54:42.142 # fork operation complete
[3348] 06 Oct 10:54:42.145 * Background saving terminated with success
[3348] 06 Oct 11:09:43.035 * 1 changes in 900 seconds. Saving...
[3348] 06 Oct 11:09:43.084 * Background saving started by pid 1816
[3348] 06 Oct 11:09:43.386 # fork operation complete
[3348] 06 Oct 11:09:43.387 * Background saving terminated with success
[3348] 06 Oct 11:37:47.073 * 1 changes in 900 seconds. Saving...
[3348] 06 Oct 11:37:47.076 * Background saving started by pid 7944
[3348] 06 Oct 11:37:47.278 # fork operation complete
[3348] 06 Oct 11:37:47.280 * Background saving terminated with success
[3348] 06 Oct 11:52:48.082 * 1 changes in 900 seconds. Saving...
[3348] 06 Oct 11:52:48.085 * Background saving started by pid 6568
[3348] 06 Oct 11:52:48.287 # fork operation complete
[3348] 06 Oct 11:52:48.288 * Background saving terminated with success
[3348] 06 Oct 12:05:41.227 * 10 changes in 300 seconds. Saving...
[3348] 06 Oct 12:05:41.231 * Background saving started by pid 10732
[3348] 06 Oct 12:05:41.433 # fork operation complete
[3348] 06 Oct 12:05:41.434 * Background saving terminated with success
[3348] 06 Oct 12:10:42.090 * 10 changes in 300 seconds. Saving...
[3348] 06 Oct 12:10:42.142 * Background saving started by pid 11280
[3348] 06 Oct 12:10:42.344 # fork operation complete
[3348] 06 Oct 12:10:42.349 * Background saving terminated with success
[3348] 06 Oct 12:25:43.080 * 1 changes in 900 seconds. Saving...
[3348] 06 Oct 12:25:43.084 * Background saving started by pid 12144
[3348] 06 Oct 12:25:43.285 # fork operation complete
[3348] 06 Oct 12:25:43.289 * Background saving terminated with success
[3348] 06 Oct 12:40:44.050 * 1 changes in 900 seconds. Saving...
[3348] 06 Oct 12:40:44.054 * Background saving started by pid 8088
[3348] 06 Oct 12:40:44.356 # fork operation complete
[3348] 06 Oct 12:40:44.357 * Background saving terminated with success
[3348] 06 Oct 12:58:26.298 * 1 changes in 900 seconds. Saving...
[3348] 06 Oct 12:58:26.302 * Background saving started by pid 9272
[3348] 06 Oct 12:58:26.504 # fork operation complete
[3348] 06 Oct 12:58:26.505 * Background saving terminated with success
[3348] 06 Oct 13:13:27.069 * 1 changes in 900 seconds. Saving...
[3348] 06 Oct 13:13:27.116 * Background saving started by pid 6268
[3348] 06 Oct 13:13:27.319 # fork operation complete
[3348] 06 Oct 13:13:27.320 * Background saving terminated with success
[3348] 06 Oct 13:38:50.772 * 1 changes in 900 seconds. Saving...
[3348] 06 Oct 13:38:50.776 * Background saving started by pid 8032
[3348] 06 Oct 13:38:50.977 # fork operation complete
[3348] 06 Oct 13:38:50.983 * Background saving terminated with success
[3348] 06 Oct 17:05:56.284 * DB saved on disk
[3348] 06 Oct 17:05:56.621 * DB saved on disk
[3348] 06 Oct 17:05:59.792 * DB saved on disk
[3348] 06 Oct 17:06:02.967 * DB saved on disk
[3348] 06 Oct 17:06:06.214 * DB saved on disk
[3348] 06 Oct 17:06:06.550 * DB saved on disk
[3348] 06 Oct 17:06:10.449 * DB saved on disk
[3348] 06 Oct 17:06:13.637 * DB saved on disk
[3348] 06 Oct 17:06:16.897 * DB saved on disk
[3348] 06 Oct 17:06:17.547 * DB saved on disk
[3348] 06 Oct 17:06:20.732 * DB saved on disk
[3348] 06 Oct 17:06:23.938 * DB saved on disk
[3348] 06 Oct 17:06:27.205 * DB saved on disk
[3348] 06 Oct 17:06:27.554 * DB saved on disk
[3348] 06 Oct 17:06:30.833 * DB saved on disk
[3348] 06 Oct 17:06:36.385 * DB saved on disk
[3348] 06 Oct 17:06:39.652 * DB saved on disk
[3348] 06 Oct 17:06:40.015 * DB saved on disk
[3348] 06 Oct 17:06:43.234 * DB saved on disk
[3348] 06 Oct 17:06:46.593 * DB saved on disk
[3348] 06 Oct 17:06:49.887 * DB saved on disk
[3348] 06 Oct 17:06:50.249 * DB saved on disk
[3348] 06 Oct 17:06:53.458 * DB saved on disk
[3348] 06 Oct 17:06:56.722 * DB saved on disk
[3348] 06 Oct 17:07:00.035 * DB saved on disk
[3348] 06 Oct 17:07:00.378 * DB saved on disk
[3348] 06 Oct 17:07:03.595 * DB saved on disk
[3348] 06 Oct 17:07:06.845 * DB saved on disk
[3348] 06 Oct 17:07:10.194 * DB saved on disk
[3348] 06 Oct 17:07:10.550 * DB saved on disk
[3348] 06 Oct 17:07:13.743 * DB saved on disk
[3348] 06 Oct 17:07:17.105 * DB saved on disk
[3348] 06 Oct 17:07:20.429 * DB saved on disk
[3348] 06 Oct 17:07:20.776 * DB saved on disk
[3348] 06 Oct 17:07:23.994 * DB saved on disk
[3348] 06 Oct 17:07:27.168 * DB saved on disk
[3348] 06 Oct 17:07:30.489 * DB saved on disk
[3348] 06 Oct 17:07:30.842 * DB saved on disk
[3348] 06 Oct 17:07:34.013 * DB saved on disk
[3348] 06 Oct 17:07:37.179 * DB saved on disk
[3348] 06 Oct 17:07:40.459 * DB saved on disk
[3348] 06 Oct 17:07:40.794 * DB saved on disk
[3348] 06 Oct 17:07:44.533 * DB saved on disk
[3348] 06 Oct 17:07:47.747 * DB saved on disk
[3348] 06 Oct 17:08:21.349 * DB saved on disk
[3348] 06 Oct 17:08:21.694 * DB saved on disk
[3348] 06 Oct 17:08:24.877 * DB saved on disk
[3348] 06 Oct 17:08:28.056 * DB saved on disk
[3348] 06 Oct 17:08:31.317 * DB saved on disk
[3348] 06 Oct 17:08:31.681 * DB saved on disk
[3348] 06 Oct 17:08:34.858 * DB saved on disk
[3348] 06 Oct 17:08:38.036 * DB saved on disk
[3348] 06 Oct 17:08:41.594 * DB saved on disk
[3348] 06 Oct 17:08:41.949 * DB saved on disk
[3348] 06 Oct 17:08:45.133 * DB saved on disk
[3348] 06 Oct 17:08:48.311 * DB saved on disk
[3348] 06 Oct 17:08:51.572 * DB saved on disk
[3348] 06 Oct 17:08:51.913 * DB saved on disk
[3348] 06 Oct 17:08:55.092 * DB saved on disk
[3348] 06 Oct 17:08:58.296 * DB saved on disk
[3348] 06 Oct 17:09:01.564 * DB saved on disk
[3348] 06 Oct 17:09:01.920 * DB saved on disk
[3348] 06 Oct 17:09:05.100 * DB saved on disk
[3348] 06 Oct 17:09:08.278 * DB saved on disk
[3348] 06 Oct 17:09:11.545 * DB saved on disk
[3348] 06 Oct 17:09:11.897 * DB saved on disk
[3348] 06 Oct 17:09:15.080 * DB saved on disk
[3348] 06 Oct 17:09:18.260 * DB saved on disk
[3348] 06 Oct 17:09:21.525 * DB saved on disk
[3348] 06 Oct 17:09:21.866 * DB saved on disk
[3348] 06 Oct 17:09:25.046 * DB saved on disk
[3348] 06 Oct 17:09:28.224 * DB saved on disk
[3348] 06 Oct 17:09:31.484 * DB saved on disk
[3348] 06 Oct 17:09:31.829 * DB saved on disk
[3348] 06 Oct 17:09:35.007 * DB saved on disk
[3348] 06 Oct 17:09:38.182 * DB saved on disk
[3348] 06 Oct 17:09:41.440 * DB saved on disk
[3348] 06 Oct 17:09:41.793 * DB saved on disk
[3348] 06 Oct 17:09:44.971 * DB saved on disk
[3348] 06 Oct 17:09:48.155 * DB saved on disk
[3348] 06 Oct 17:09:51.417 * DB saved on disk
[3348] 06 Oct 17:09:51.757 * DB saved on disk
[3348] 06 Oct 17:09:54.936 * DB saved on disk
[3348] 06 Oct 17:09:58.113 * DB saved on disk
[3348] 06 Oct 17:10:01.377 * DB saved on disk
[3348] 06 Oct 17:10:01.736 * DB saved on disk
[3348] 06 Oct 17:10:04.916 * DB saved on disk
[3348] 06 Oct 17:10:08.100 * DB saved on disk
[3360] 07 Oct 04:11:49.376 * Redis 3.0.503 (00000000/0) 64 bit, standalone mode, port 6379, pid 3360 ready to start.
[3360] 07 Oct 04:11:49.376 # Server started, Redis version 3.0.503
[3360] 07 Oct 04:11:49.391 * DB loaded from disk: 0.004 seconds
[3360] 07 Oct 04:11:49.407 * The server is now ready to accept connections on port 6379
[3360] 07 Oct 04:36:20.262 * 1 changes in 900 seconds. Saving...
[3360] 07 Oct 04:36:20.756 * Background saving started by pid 6020
[3360] 07 Oct 04:36:21.391 # fork operation complete
[3360] 07 Oct 04:36:21.416 * Background saving terminated with success
[3360] 07 Oct 04:51:22.020 * 1 changes in 900 seconds. Saving...
[3360] 07 Oct 04:51:22.025 * Background saving started by pid 6248
[3360] 07 Oct 04:51:22.326 # fork operation complete
[3360] 07 Oct 04:51:22.327 * Background saving terminated with success
[8064] 08 Oct 03:56:05.831 * Redis 3.0.503 (00000000/0) 64 bit, standalone mode, port 6379, pid 8064 ready to start.
[8064] 08 Oct 03:56:05.878 # Server started, Redis version 3.0.503
[8064] 08 Oct 03:56:05.940 * DB loaded from disk: 0.025 seconds
[8064] 08 Oct 03:56:05.940 * The server is now ready to accept connections on port 6379

if required additional details will provide
Thanks

Do you have TTLs set on your data? That would explain the behavior you’re seeing.