Cascade Broke Object Serialization Format
Deserialization fails for objects saved in Redis cache or session store after Cascade modified entity fields. Old serialized objects cannot be deserialized with new class definition. This breaks session persistence and cached data retrieval.
Cascade likely added/removed fields without considering serialization compatibility.
Error Messages You Might See
Common Causes
- Cascade added field without default value, breaking deserialization of old objects
- Changed field type (Integer to String) incompatible with serialized data
- Removed @SerialVersionUID causing mismatch on deserialization
- Changed serialization class name or package breaking old serialized data
How to Fix It
Implement @SerialVersionUID for version control of serialized objects. Use custom serialization methods (readObject/writeObject) for forward/backward compatibility. Add default values for new fields. Consider using JSON serialization (Jackson) instead of binary serialization for flexibility. Clear caches/sessions if data format incompatible.
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Get HelpFrequently Asked Questions
How do I maintain serialization compatibility?
Add @SerialVersionUID field. Use custom serialization methods. Add defaults for new fields.
Should I use binary or JSON serialization?
JSON (Jackson) is more flexible for schema changes. Binary is faster but less compatible.