ESP32-HTTP-Client library claims 99% less RAM and 12x faster REST API calls

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A new open-source library called ESP32-HTTP-Client has been developed to address common memory and performance problems faced by IoT developers using the ESP32 microcontroller. Unlike the standard HTTPClient and ArduinoJson combination, which loads entire HTTP payloads into RAM before parsing, the new library uses Direct Memory Binding and stream parsing to inject JSON data directly into C++ variables. In controlled tests with 100 consecutive HTTP requests, the library reportedly allocated near-zero heap per request compared to roughly 58 KB with the standard approach, while also running about 12 times faster by reusing TCP/TLS connections via HTTP Keep-Alive. The library is available for both PlatformIO and Arduino IDE, and aims to reduce boilerplate code to a single fluent method chain.

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