When and How to Use JSON Serialization in Postman

A new member of Postman’s developer advocacy team undertook the 30 Days of Postman challenge, using the opportunity to explore the importance of data serialization in the Postman API Platform. Serialization, the process of converting complex data types into simpler ones, is crucial for data transfer between systems with varying data type compatibility. In Postman, serialization ensures that dynamic request bodies and complex data structures such as arrays and objects are properly managed when passed between requests. This process is particularly relevant when building dynamic bodies in pre-request scripts, where serialized data can be stored and retrieved efficiently using JSON.stringify() and JSON.parse(). The author’s exploration, livestreamed on Twitch, highlighted the necessity of serialization for avoiding unexpected results in applications and demonstrated its application using the Postman Echo API. The technical review for this examination was conducted by Arlemi Turpault and Shamasis Bhattacharya.

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