Published at LXer:
Running applications in our brave new container orchestration world is like managing herds of fireflies; they blink in and out. There is no such thing as uptimes anymore. Applications run, and when they fail, replacements launch from vanilla images. Easy come, easy go. But if your application needs to preserve state, it and must either take periodic snapshots*or have some other method of recovering state. Snapshots are far from ideal as you will likely lose data, as with any non-graceful shutdown.
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