Building ⚡ Lightning-Fast APIs ⚡ with Go: A Comprehensive Guide

Sumeet Ninawe
5 min readSep 18, 2023

The lightning-fast speeds and reduced latency of 5G have ushered in a new era of real-time data exchange, prompting APIs to evolve accordingly. APIs now need to support the seamless and instantaneous transfer of larger data volumes, catering to the increased demand for high-quality multimedia content and dynamic interactions.

Originally published at https://blog.letsdote.ch. This is the 2nd post as part of the Golang Theme.

This demands a reevaluation of API design, necessitating the creation of endpoints that can handle the surge in data traffic without sacrificing performance. Modern APIs must prioritize efficiency, scalability, and low latency, ensuring that applications can leverage the technology’s capabilities to their fullest extent.

In this post, we will explore how to build lightning fast APIs using Go programming language.

Factors contributing to the API Performance

API performance is a multidimensional concept that encompasses factors like throughput, request/response times, and latency benchmarks. Developers must consider these factors while designing and optimizing APIs to ensure they can handle the demands of modern applications, deliver a seamless user experience, and leverage the capabilities of technologies like 5G to their fullest extent.

API performance directly impacts user experience, application responsiveness, and overall system efficiency. Several factors come into play when considering API performance, and understanding these factors is essential for creating responsive and reliable applications.

  1. Throughput: refers to the number of requests an API can handle within a given time frame. High throughput indicates that the API can efficiently process numerous requests concurrently. It is especially crucial in scenarios where the API is handling a substantial number of simultaneous connections, for example during peak usage periods.
  2. Request-Response Time: Request time is the duration it takes for a client to send a request to the API, while response time is the duration it takes for the API to process the request and send a response back to the client. Low request and response times are…

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Sumeet Ninawe

I write (and sometimes rant) about building a solo business in SaaS. More: https://blog.letsdote.ch