squash13

Squash13 is a fictional data interchange format described as a compact, schema-driven method for encoding structured records. It is presented as an educational example that emphasizes predictable encoding, simple tooling, and cross-language compatibility.

Origin and naming: The concept arose in the context of teaching material about data serialization. The name combines the idea of compressing information with the number 13, which is associated with a reference set of thirteen primitive field types used by the example schema.

Design and features: The format defines a small fixed vocabulary of thirteen primitive types and supports nested and array structures. Encodings include a lightweight header that enables basic schema validation at read time. The design aims for straightforward implementation and efficient decoding, with emphasis on predictable payloads and easy integration into sample projects.

Implementation and usage: In the educational materials where squash13 appears, it serves to illustrate the trade-offs between payload size, decoding speed, and schema evolution. It is discussed alongside real-world formats such as JSON, Protocol Buffers, and Thrift, positioned as a didactic contrast rather than a recommended production choice. Reference implementations in multiple languages are used to demonstrate encoding, decoding, and simple streaming scenarios within learning contexts.

Reception and status: As a pedagogical construct, squash13 is not widely adopted in production systems. It is used primarily to discuss concepts of compact schemas, forward and backward compatibility, and the practical considerations of choosing data serialization formats in software design courses.

See also: JSON, Protocol Buffers, Apache Thrift, data serialization, schema evolution.