doc: No longer suggest Kryo serialization - #31448
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The use of Kryo to serialize data which is expected to be deserialized by a process not running at the time of the serialization is not recommended.
johanandren
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Jun 28, 2022
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These recommendations are likely vestiges of a pre-Jackson past.
Kryo as a serialization format is likely still OK for remoting serialization, but its maintainers have stated that they do not want to have backward/forward-compatibility hold back development, which makes its use for persistence problematic as any version upgrade may render persisted states/events unreadable. A Chill maintainer has commented that one "should never store kryo data beyond the life of a single process".
If you have used Kryo as a persistence serialization, it is recommended to explore other serialization options.