Tom Akehurst's talk at QCon London 2025 focused on enhancing developer autonomy within large-scale microservices architectures. He identified common pitfalls, such as API dependencies and unreliable mocking, which hinder developers. Akehurst presented strategies involving advanced mocking techniques, contract testing, and observability, highlighting their importance in simulating realistic API interactions. He urged for improvements beyond standard mocks to ensure effective testing, emphasizing that contracts align consumer and provider expectations, thereby mitigating the risks associated with interconnected services in expansive systems.
Akehurst emphasized that effective API simulation is not just about returning canned responses but about accurately reflecting the behavior of the real API.
He explained how contracts can define the expected interactions between a consumer and a provider, ensuring that both sides adhere to the agreed-upon interface.
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