Vinta

Create a custom migration in Django

2017-01-232019-10-22VintaDatabase, Python

ALTER TABLE app_repostarring CHANGE repo_description repo_description VARCHAR(191) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

Locking and MVCC in MySQL InnoDB 鎖機制與多版本並發控制

2017-01-102019-10-22VintaDatabase

最近在研究 MySQL 5.6 / 5.7 InnoDB storage engine 的 Transaction、Locking 和 Multi-Version Concurrency Control (MVCC) 機制，基本上只討論 Isolation level 是 REPEATABLE READ 或 READ COMMITTED 的情況，這一篇是過程中記錄下來的筆記。

Redirect Console Output: stdout and stderr

2017-01-022019-10-31VintaDevOps

0: stdin
1: stdout
2: stderr

Lazy evaluation in Django middlewares

2016-12-292019-10-22VintaPython, Web Development

Attach a lazy evaluated function as a property of request in a middleware.

Setup Jupyter and other Machine Learning tools on macOS

2016-11-152019-10-22VintaMachine Learning, Python

Jupyter Notebook is an interactive environment for running code in the browser. It allows you to create interactive documents that contain live code, rich text elements and visualizations. It's also a widely used tool for Data Scientists to make prototypes or demonstrations.