My slides from PyCon China 2026 are now available: One Bug as a Doorway into CPython — Learning the Interpreter through Free-Threading Bugs.
Open or download the slides (PDF, 28 pages)
The talk follows a concrete concurrency bug as a way to learn a large codebase: start with observable behavior, reproduce the race, trace the Python-to-C call path, and work out which ownership and synchronization rules the code relies on.
Redis Stack has supported a new probabilistic data structure t-dgest.
In KvRocks, we should make an implementation to support t-digest as well.
In recent days, I tried to contribute to the Kong ingress controller project.
During the development, I faced some challenges and learned a lot about the controller development in Kubernetes.
Here are some experience of how to build the environment for testing and debugging the Kong ingress controller.
Notes on C++ move semantics, copy elision (RVO/NRVO), value categories, and perfect forwarding, with examples and common pitfalls.