Tag: celery
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The Incomplete Guide to Google Kubernetes Engine
Category: DevOps, Web Development
Kubernetes is the de facto standard of container orchestration. Google Kubernetes Engine (GKE) is a managed Kubernetes as a Service provided by Google Cloud Platform.
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Run a Celery task at a specific time
Category: Python, Web Development
You are able to run any Celery task at a specific time through eta (means "Estimated Time of Arrival") parameter.
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Django's get_or_create() may raise IntegrityError but subsequent get() raises DoesNotExist
Category: Database, Python, Web Development
get_or_create() 拋出 IntegrityError 但是接著 get() 一次卻會是 DoesNotExist，以上的錯誤常常會發生在 MySQL 的 isolation level 是 REPEATABLE READ 的情況下。MySQL 默認採用 REPEATABLE READ（而 PostgreSQL 預設是 READ COMMITTED）。