DTLE 3.20.09.0 Release Notes – New Monitoring Features, Docker Support, and Bug Fixes

DTLE (Data Transfer Layer Engine) is an open‑source component designed for MySQL that aims to ensure reliable data transfer, adapt to complex scenarios, and offer a variety of functions.

Project Links Repository: https://github.com/actiontech/dtle Documentation: https://actiontech.github.io/dtle-docs-cn/ Release information: https://github.com/actiontech/dtle/releases Tip: It is recommended to download the latest release; RPM packages are available for RHEL/CentOS, while tarballs or Docker images can be used on other Linux distributions.

New Features

The 3.20.09.0 release adds monitoring items for replication delay and memory usage. Details are available in the manual sections 3.4 and 3.11.

Replication delay monitoring

Memory usage monitoring

Prometheus Configuration Demo

Prometheus can be used to visualize the new metrics and store historical values. Below is a sample prometheus.yml configuration:

scrape_configs:
  - job_name: 'dtle'
  # Override the global default and scrape targets from this job every 5 seconds.
  scrape_interval: 5s
  static_configs:
    - targets: ['127.0.0.1:8190','127.0.0.2:8190'] # Fill in the DTLE compatibility layer address; multiple entries are allowed.

Run Prometheus with Docker using the following command:

docker run \
    -p 9090:9090 \
    -v ${PWD}/prometheus.yml:/etc/prometheus/prometheus.yml \
    prom/prometheus

After starting, open a browser at http://127.0.0.1:9090 to query the metrics.

For detailed metric definitions, refer to the manual sections:

Metrics for delay (3.4)

Metrics for memory (3.11)

Fixes

Replaced incremental sequence library to reduce CPU usage and improve performance.

Handled uppercase characters in the 'where' column (issue #523).

Release Notes Summary

New

Metrics for delay

Metrics for memory

Fixed

Use gencode instead of gob for incremental stage serialization, reducing CPU consumption.

Fix #523: handle uppercase in 'where' column.

Recommended reading: Data Transfer | DTLE Introduction