# The Redis Slow Log is a system to log queries that exceeded a specified
# execution time. The execution time does not include the I/O operations
# like talking with the client, sending the reply and so forth,
# but just the time needed to actually execute the command (this is the only
# stage of command execution where the thread is blocked and can not serve
# other requests in the meantime).
#
# You can configure the slow log with two parameters: one tells Redis
# what is the execution time, in microseconds, to exceed in order for the
# command to get logged, and the other parameter is the length of the
# slow log. When a new command is logged the oldest one is removed from the
# queue of logged commands.
# The following time is expressed in microseconds, so 1000000 is equivalent
# to one second. Note that a negative number disables the slow log, while
# a value of zero forces the logging of every command.
#
# Redis慢查询日志可以记录超过指定时间的查询。运行时间不包括各种I/O时间，例如：连接客户端，
# 发送响应数据等，而只计算命令执行的实际时间（这只是线程阻塞而无法同时为其他请求服务的命令执
# 行阶段）
#
# 你可以为慢查询日志配置两个参数:一个指明Redis的超时时间(单位为微秒)来记录超过这个时间的命令
# 另一个是慢查询日志长度。当一个新的命令被写进日志的时候，最老的那个记录从队列中移除。
#
# 下面的时间单位是微秒，所以1000000就是1秒。注意，负数时间会禁用慢查询日志，而0则会强制记录
# 所有命令。
#
slowlog-log-slower-than 10000
# There is no limit to this length. Just be aware that it will consume memory.
# You can reclaim memory used by the slow log with SLOWLOG RESET.
#
# 这个长度没有限制。只是要主要会消耗内存。你可以通过 SLOWLOG RESET 来回收内存。
#
slowlog-max-len 128
################################ LATENCY MONITOR ##############################
# The Redis latency monitoring subsystem samples different operations
# at runtime in order to collect data related to possible sources of
# latency of a Redis instance.
#
# Via the LATENCY command this information is available to the user that can
# print graphs and obtain reports.
#
# The system only logs operations that were performed in a time equal or
# greater than the amount of milliseconds specified via the
# latency-monitor-threshold configuration directive. When its value is set
# to zero, the latency monitor is turned off.
#
# By default latency monitoring is disabled since it is mostly not needed
# if you don't have latency issues, and collecting data has a performance
# impact, that while very small, can be measured under big load. Latency
# monitoring can easily be enalbed at runtime using the command
# "CONFIG SET latency-monitor-threshold <milliseconds>" if needed.
#
# redis延时监控系统在运行时会采样一些操作，以便收集可能导致延时的数据根源。
#
# 通过 LATENCY命令可以打印一些图样和获取一些报告，方便监控
#
# 这个系统仅仅记录那个执行时间大于或等于预定时间（毫秒）的操作,
# 这个预定时间是通过latency-monitor-threshold配置来指定的，
# 当设置为0时，这个监控系统处于停止状态
#
# 默认情况下这个监控系统是处于停止状态的，因为大部分情况下都是不需要的，如果你
# 没有延时问题，收集数据会有一个性能冲击，这个影响会比较小，并且可以测试出来
# 延时监控可以很容易的在线开启，通过命令 CONFIG SET latency-monitor-threshold
# <milliseconds> 开启.
latency-monitor-threshold 0
############################# Event notification ##############################