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by maksut 2908 days ago
Maybe you can use one of the data interchange protocols that has a story for backward/forward compatibility? Something like Apache Avro or Protocol Buffers should allow you to work with different versions of your data at the same time.

See: http://martin.kleppmann.com/2012/12/05/schema-evolution-in-a...

His book "Designing Data-Intensive Applications" has a section on this.