Tag: virtualization
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What is API Simulation? Tools, Types & Use Cases
API simulation replaces real dependencies with stand-ins that respond like the actual service, keeping tests deterministic and free from rate limits, per-call fees, or unfinished upstream APIs. Simulators are built from hand-written stubs, OpenAPI specs, or recorded traffic; Keploy follows the recorded-traffic approach, capturing real HTTP, gRPC, database, and queue calls and replaying them automatically.…
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Dependency Mocking and Service Virtualization: Make Every CI Test Deterministic
Dependency mocking replaces real external dependencies (APIs, databases, queues) with controlled substitutes during testing. Service virtualization extends this to enterprise scale, adding stateful simulation and protocol support beyond HTTP. Keploy implements a traffic-capture approach: it records real dependency interactions at the kernel level using eBPF and replays them in CI, making integration tests deterministic without…