我在docker（官方图片）上有一个redis实例（3.2），除了我每秒启动的脚本以外，它几乎未被使用，以排列ZSET中的潜在项目。 这是我的剧本：
local latestSchedule = redis.call('ZRANGEBYSCORE', KEYS[1], '-inf', 123456789, 'LIMIT', '0', '1')
if latestSchedule[1] == nil then return nil end
redis.call('ZREM', KEYS[1], latestSchedule[1])
return latestSchedule[1]
即使这个ZSET大部分时间都是空的，Redis正在吃掉越来越多的内存，最多128MB，直到它重新启动并再次上升。
我错过了什么吗？ redis内存使用量通常会增长而不做任何事情吗？ 我的脚本不适合从ZSET中排队吗？ 我应该去别的地方看吗？
根据Karthikeyan Gopall的要求，这是INFO，就在它达到128MB之前：
# Server
redis_version:3.2.0
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:5382f69a4e75566b
redis_mode:standalone
os:Linux 3.16.0-4-amd64 x86_64
arch_bits:64
multiplexing_api:epoll
gcc_version:4.9.2
process_id:1
run_id:4e22b73f22436677376b4d097746c2a30ba2b9bc
tcp_port:6379
uptime_in_seconds:21140
uptime_in_days:0
hz:10
lru_clock:6816977
executable:/data/redis-server
config_file:
# Clients
connected_clients:5
client_longest_output_list:0
client_biggest_input_buf:0
blocked_clients:0
# Memory
used_memory:33392560
used_memory_human:31.85M
used_memory_rss:125399040
used_memory_rss_human:119.59M
used_memory_peak:33473544
used_memory_peak_human:31.92M
total_system_memory:1787236352
total_system_memory_human:1.66G
used_memory_lua:67447808
used_memory_lua_human:64.32M
maxmemory:134217728
maxmemory_human:128.00M
maxmemory_policy:noeviction
mem_fragmentation_ratio:3.76
mem_allocator:jemalloc-4.0.3
# Persistence
loading:0
rdb_changes_since_last_save:162
rdb_bgsave_in_progress:0
rdb_last_save_time:1466413629
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:-1
rdb_current_bgsave_time_sec:-1
aof_enabled:1
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
aof_last_write_status:ok
aof_current_size:1039856
aof_base_size:0
aof_pending_rewrite:0
aof_buffer_length:0
aof_rewrite_buffer_length:0
aof_pending_bio_fsync:0
aof_delayed_fsync:0
# Stats
total_connections_received:21174
total_commands_processed:339098
instantaneous_ops_per_sec:10
total_net_input_bytes:34329347
total_net_output_bytes:11702705
instantaneous_input_kbps:0.96
instantaneous_output_kbps:0.14
rejected_connections:0
sync_full:0
sync_partial_ok:0
sync_partial_err:0
expired_keys:24
evicted_keys:0
keyspace_hits:200
keyspace_misses:84628
pubsub_channels:0
pubsub_patterns:0
latest_fork_usec:0
migrate_cached_sockets:0
# Replication
role:master
connected_slaves:0
master_repl_offset:0
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0
# CPU
used_cpu_sys:27.75
used_cpu_user:21.72
used_cpu_sys_children:0.00
used_cpu_user_children:0.00
# Cluster
cluster_enabled:0
# Keyspace
db0:keys=47,expires=47,avg_ttl=17584379
当它重新启动时：
# Server
redis_version:3.2.0
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:5382f69a4e75566b
redis_mode:standalone
os:Linux 3.16.0-4-amd64 x86_64
arch_bits:64
multiplexing_api:epoll
gcc_version:4.9.2
process_id:1
run_id:4e22b73f22436677376b4d097746c2a30ba2b9bc
tcp_port:6379
uptime_in_seconds:21140
uptime_in_days:0
hz:10
lru_clock:6816977
executable:/data/redis-server
config_file:
# Clients
connected_clients:5
client_longest_output_list:0
client_biggest_input_buf:0
blocked_clients:0
# Memory
used_memory:33392560
used_memory_human:31.85M
used_memory_rss:125399040
used_memory_rss_human:119.59M
used_memory_peak:33473544
used_memory_peak_human:31.92M
total_system_memory:1787236352
total_system_memory_human:1.66G
used_memory_lua:67447808
used_memory_lua_human:64.32M
maxmemory:134217728
maxmemory_human:128.00M
maxmemory_policy:noeviction
mem_fragmentation_ratio:3.76
mem_allocator:jemalloc-4.0.3
# Persistence
loading:0
rdb_changes_since_last_save:162
rdb_bgsave_in_progress:0
rdb_last_save_time:1466413629
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:-1
rdb_current_bgsave_time_sec:-1
aof_enabled:1
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
aof_last_write_status:ok
aof_current_size:1039856
aof_base_size:0
aof_pending_rewrite:0
aof_buffer_length:0
aof_rewrite_buffer_length:0
aof_pending_bio_fsync:0
aof_delayed_fsync:0
# Stats
total_connections_received:21174
total_commands_processed:339098
instantaneous_ops_per_sec:10
total_net_input_bytes:34329347
total_net_output_bytes:11702705
instantaneous_input_kbps:0.96
instantaneous_output_kbps:0.14
rejected_connections:0
sync_full:0
sync_partial_ok:0
sync_partial_err:0
expired_keys:24
evicted_keys:0
keyspace_hits:200
keyspace_misses:84628
pubsub_channels:0
pubsub_patterns:0
latest_fork_usec:0
migrate_cached_sockets:0
# Replication
role:master
connected_slaves:0
master_repl_offset:0
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0
# CPU
used_cpu_sys:27.75
used_cpu_user:21.72
used_cpu_sys_children:0.00
used_cpu_user_children:0.00
# Cluster
cluster_enabled:0
# Keyspace
db0:keys=47,expires=47,avg_ttl=17584379
答案 0 :(得分：1)
你的理解是错误的。这里 maxmemory_human：128.00M 表示redis可以根据您的配置获取的最大内存（您可以在redis.conf文件中更改此值，您当前的值将为134217728字节，即128 MB）。如果您的内存使用超出此范围，redis将根据您的驱逐策略开始丢失内存错误（ maxmemory_policy：noeviction ）
您需要查看 used_memory_human：31.85M 以获取redis使用的当前内存。
# Keyspace
db0:keys=47,expires=47,avg_ttl=17584379
在你的服务器中有46个以上的键，我想这是一个正常的内存。
您可以在此链接http://redis.io/commands/INFO中的info命令中查看有关每个值的更多详细信息。
希望这有帮助。