tidb_enable_tso_follower_proxy �→ Newly added Determines whether to enable or disable the TSO Follower Proxy feature. The default value is OFF, which means the TSO Follower Proxy feature is disabled. At timestamp processing flow and reduces the timestamp processing load of PD by enabling PD Follower Proxy and modifying the batch waiting time required when the PD client requests TSO in batches. This helps disabling PD Follower Proxy through the system variable tidb_enable_tso_follower_proxy. Suppose that the TSO requests load of PD is too high. In this case, enabling PD follower proxy can batch forward the

ser- vice port TiFlash20170 the Ti- Flash Proxy ser- vice port 95 Component Default Port Description TiFlash20292 the port for Prometheus to pull Ti- Flash Proxy met- rics TiFlash 8234 the port for Prometheus often has things to do with the use of a proxy. You can add pressure on single TiDB server, sum each result up and compare the summed result with the result with proxy. Take HAproxy as an example. The parameter versions of HAproxy also support nbthread and cpu-map. All of these can mitigate the negative impact of proxy use on performance. 154 4.6.1.3.2 Under high concurrency, why is the CPU utilization rate of TiKV

ser- vice port TiFlash20170 the Ti- Flash Proxy ser- vice port 103 Component Default Port Description TiFlash20292 the port for Prometheus to pull Ti- Flash Proxy met- rics TiFlash 8234 the port for Prometheus often has things to do with the use of a proxy. You can add pressure on single TiDB server, sum each result up and compare the summed result with the result with proxy. Take HAproxy as an example. The parameter versions of HAproxy also support nbthread and cpu-map. All of these can mitigate the negative impact of proxy use on performance. 163 4.6.1.3.2 Under high concurrency, why is the CPU utilization rate of TiKV

ser- vice port TiFlash20170 the Ti- Flash Proxy ser- vice port 119 Component Default Port Description TiFlash20292 the port for Prometheus to pull Ti- Flash Proxy met- rics TiFlash 8234 the port for Prometheus often has things to do with the use of a proxy. You can add pressure on single TiDB server, sum each result up and compare the summed result with the result with proxy. Take HAproxy as an example. The parameter versions of HAproxy also support nbthread and cpu-map. All of these can mitigate the negative impact of proxy use on performance. 186 4.6.1.3.2 Under high concurrency, why is the CPU utilization rate of TiKV

without worrying about incorrectly terminating other queries or sessions by mistake when there is a proxy between the client and TiDB. Currently, TiDB does not support using Ctrl+C to terminate queries or it.), Spring auto- matically wraps all objects with the @Transactional annotation in a proxy and uses this proxy for object invocation processing. You can simply assume that when the agent calls a function clean up connections after a specific idle period (determined by the proxy’s idle configuration). In addition to monitoring the proxy’s idle configuration, connection pools also need to maintain or probe

clean up connections after a specific idle period (determined by the proxy’s idle configuration). In addition to monitoring the proxy’s idle configuration, connection pools also need to maintain or probe that this connection was idle for a long time and then closed by the proxy. The usual solution is to increase the value of the proxy’s idle configuration and allow the connection pool to: • Check whether increments and are guaranteed to be unique. In most scenarios, AUTO_INCREMENT columns are used as proxy primary keys with no actual meaning. 531 The limitation of AUTO_INCREMENT columns is that the column

documentation. 40 2.2.1.4 Availability • Support the proxy component TiProxy (experimental) #413 @djshow832 @xhebox TiProxy is the official proxy component of TiDB, located between the client and TiDB now includes tiproxy �→ -{version}-linux-{arch}.tar.gz, which is the installation package for the proxy com- ponent TiProxy. 2.2.4 Deprecated features • Support for the TLSv1.0 and TLSv1.1 protocols is e- cu- tion Frame- work (DXF) tasks Y Y N N N N N N N N N PD Fol- lower Proxy (con- trolled by tidb_enable_tso_follower_proxy �→ ) Y Y Y Y Y Y Y N N N N Active PD Fol- lower (con- trolled by pd_ena

clean up connections after a specific idle period (determined by the proxy’s idle configuration). In addition to monitoring the proxy’s idle configuration, connection pools also need to maintain or probe that this connection was idle for a long time and then closed by the proxy. The usual solution is to increase the value of the proxy’s idle configuration and allow the connection pool to: • Check whether increments and are guaranteed to be unique. In most scenarios, AUTO_INCREMENT columns are used as proxy primary keys with no actual meaning. 525 The limitation of AUTO_INCREMENT columns is that the column

clean up connections after a specific idle period (determined by the proxy’s idle configuration). In addition to monitoring the proxy’s idle configuration, connection pools also need to maintain or probe that this connection was idle for a long time and then closed by the proxy. The usual solution is to increase the value of the proxy’s idle configuration and allow the connection pool to: • Check whether increments and are guaranteed to be unique. In most scenarios, AUTO_INCREMENT columns are used as proxy primary keys with no actual meaning. 545 The limitation of AUTO_INCREMENT columns is that the column

Frame- work (DXF) tasks Y Y Y Y N N N N N N N PD Fol- lower Proxy (con- trolled by tidb �→ _ �→ enable �→ _ �→ tso �→ _ �→ follower �→ _ �→ proxy �→ ) Y Y Y Y Y Y Y Y Y Y N N 106 Management, ob- serv- clean up connections after a specific idle period (determined by the proxy’s idle configuration). In addition to monitoring the proxy’s idle configuration, connection pools also need to maintain or probe that this connection was idle for a long time and then closed by the proxy. The usual solution is to increase the value of the proxy’s idle configuration and allow the connection pool to: • Check whether