libtiflash_proxy.so dynamic library to the LD_LIBRARY_PATH environ- ment variable. This is because the running of TiFlash relies on the libtiflash_proxy �→ .so dynamic library. For example, when tiflash first switch to this directory, and then use the following command to check the TiFlash version: LD_LIBRARY_PATH=./ ./tiflash version • Check the TiFlash version by referring to the TiFlash log. For the log steps below: 1. Check whether your system is CentOS8. CentOS8 does not have the libnsl.so system library. You can manually install it via the following command: shell dnf install libnsl 464 2. Check

statistics 51 – Fix the issue that TiFlash fails to start up on some platforms due to the absence of library nsl – Block the infinite wait of wait index when writing pressure is heavy (a default timeout of libtiflash_proxy.so dynamic library to the LD_LIBRARY_PATH environ- ment variable. This is because the running of TiFlash relies on the libtiflash_proxy �→ .so dynamic library. For example, when tiflash first switch to this directory, and then use the following command to check the TiFlash version: LD_LIBRARY_PATH=./ ./tiflash version • Check the TiFlash version by referring to the TiFlash log. For the log

libtiflash_proxy.so dynamic library to the LD_LIBRARY_PATH environ- ment variable. This is because the running of TiFlash relies on the libtiflash_proxy �→ .so dynamic library. For example, when tiflash first switch to this directory, and then use the following command to check the TiFlash version: LD_LIBRARY_PATH=./ ./tiflash version • Check the TiFlash version by referring to the TiFlash log. For the log below: 480 1. Check whether your system is CentOS8. CentOS8 does not have the libnsl.so system library. You can manually install it via the following command: shell dnf install libnsl 2. Check your

libtiflash_proxy.so dynamic library to the LD_LIBRARY_PATH environ- ment variable. This is because the running of TiFlash relies on the libtiflash_proxy �→ .so dynamic library. For example, when tiflash first switch to this directory, and then use the following command to check the TiFlash version: LD_LIBRARY_PATH=./ ./tiflash version • Check the TiFlash version by referring to the TiFlash log. For the log steps below: 1. Check whether your system is CentOS8. CentOS8 does not have the libnsl.so system library. You can manually install it via the following command: shell dnf install libnsl 2. Check your

reuse code easily, which makes your code slightly redundant. GORM is a popular open-source ORM library for Golang. The following instructions take v1.23.5 as an example. To adapt TiDB transactions, write https://github.com/pingcap-inc/tidb-example-python.git SQLAlchemy is a popular open-source ORM library for Python. The following uses SQLAlchemy 1.44 as an example. import uuid from typing import List how to use SQLAlchemy, refer to SQLAlchemy documenta- tion. peewee is a popular open-source ORM library for Python. The following uses peewee 3.15.4 as an example. import os import uuid 237 from typing

Support backing up data to the Asia Pacific region (ap-southeast-3) of AWS by updating the rusoto library #13751 @3pointer • Reduce pessimistic transaction conflicts #13298 @MyonKeminta • Improve recovery PyMySQL) for the sample app: pip install -r requirements.txt Why use PyMySQL? SQLAlchemy is an ORM library that works with multiple databases. It provides a high- level abstraction of the database, which This sample application uses PyMySQL as the database driver, which is a pure Python MySQL client library that is compatible with TiDB and can be installed on all platforms. You can also use other database

so，因此需要将包含动态库 libtiflash_proxy �→ .so 的目录路径添加到环境变量 LD_LIBRARY_PATH 后，上述命令才能正常执行。 例如，当 tiflash 和 libtiflash_proxy.so 在同一个目录下时，切换到该目录后，可以通过如下命令查 看 TiFlash 版本： LD_LIBRARY_PATH=./ ./tiflash version • 在 TiFlash 日志（日志路径见配置文件 000000000ff0000020000000000fa, 7480000000000000 �→ ff2d5f698000000000ff0000030000000000fa) index c4: (7480000000000000ff2d5f698000000000ff0000030000000000fa, 7480000000000000 �→ ff2d5f698000000000f index c3: (74800000000000002f5f698000000000000002, 74800000000000002 �→ f5f698000000000000003) index c4: (74800000000000002f5f698000000000000003, 74800000000000002 �→ f5f698000000000000004) table rows:

so，因此需要将包含动态库 libtiflash_proxy �→ .so 的目录路径添加到环境变量 LD_LIBRARY_PATH 后，上述命令才能正常执行。 例如，当 tiflash 和 libtiflash_proxy.so 在同一个目录下时，切换到该目录后，可以通过如下命令查 看 TiFlash 版本： LD_LIBRARY_PATH=./ ./tiflash version • 在 TiFlash 日志（日志路径见配置文件 000000000ff0000020000000000fa, 7480000000000000 �→ ff2d5f698000000000ff0000030000000000fa) index c4: (7480000000000000ff2d5f698000000000ff0000030000000000fa, 7480000000000000 �→ ff2d5f698000000000f index c3: (74800000000000002f5f698000000000000002, 74800000000000002 �→ f5f698000000000000003) index c4: (74800000000000002f5f698000000000000003, 74800000000000002 �→ f5f698000000000000004) table rows:

for the sample app: pip install -r requirements.txt 184 Why use PyMySQL? SQLAlchemy is an ORM library that works with multiple databases. It provides a high- level abstraction of the database, which This sample application uses PyMySQL as the database driver, which is a pure Python MySQL client library that is compatible with TiDB and can be installed on all platforms. You can also use other database PyMySQL) for the sample app: pip install -r requirements.txt 190 Why use PyMySQL? peewee is an ORM library that works with multiple databases. It provides a high-level abstraction of the database, which helps

PyMySQL) for the sample app: pip install -r requirements.txt Why use PyMySQL? SQLAlchemy is an ORM library that works with multiple databases. It provides a high- level abstraction of the database, which This sample application uses PyMySQL as the database driver, which is a pure Python MySQL client library that is compatible with TiDB and can be installed on all platforms. You can also use other database PyMySQL) for the sample app: pip install -r requirements.txt Why use PyMySQL? peewee is an ORM library that works with multiple databases. It provides a high-level abstraction of the database, which helps