Move over Memcached and Redis, here comes Netflix’s Hollow

After two years of internal use, Netflix is offering a new open source project as a powerful option to cache data sets that change constantly.

Hollow is a Java library and toolset aimed at in-memory caching of data sets up to several gigabytes in size. Netflix says Hollow’s purpose is threefold: It’s intended to be more efficient at storing data; it can provide tools to automatically generate APIs for convenient access to the data; and it can automatically analyze data use patterns to more efficiently synchronize with the back end.

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