New major-version track for protobuf, with some interesting new features: Removal of field presence logic for primitive value fields, removal of required fields, and removal of default values. This makes proto3 significantly easier to implement with open struct representations, as in languages like Android Java, Objective C, or Go. Removal of unknown fields. Removal of extensions, which are instead replaced by a new standard type called Any. Fix semantics for unknown enum values. Addition of maps. Addition of a small set of standard types for representation of time, dynamic data, etc. A well-defined encoding in JSON as an alternative to binary proto encoding.
Interesting priority-queue algorithm optimised for caching data on SSD
Links for 2015-02-27
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