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How We Reduced Backend Load Using Retrofit and OkHttp Caching in Android
Introduction Mobile applications frequently fetch the same resources—home feeds, category lists, configuration data, and other semi-static content. Repeated requests increase latency, consume bandwidth, and place unnecessary load on backend services. Retrofit relies on OkHttp for networking, and OkHttp provides built-in disk caching. However, responses are cached only when the server…
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Rebuilding One of the Most-Visited Screens in Our App: A Component-Driven Compose + MVI Architecture
Learn how OLX rebuilt its Ad Detail Page — visited 17 million times a month — using Jetpack Compose, MVI architecture, and component-driven design. Discover how they achieved a 99%+ crash-free rate by isolating failures, keeping the ViewModel lean with 46 single-responsibility handlers, and making every action run off the…
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The Art of Scoping: Building Lean Android Apps with Hilt
When we think about optimizing Android applications, we usually focus on reducing APK size, improving startup time, minimizing overdraw, or fixing memory leaks. One aspect that often goes unnoticed is dependency lifetime. Dependency Injection frameworks like Hilt make object creation effortless, but they also make it surprisingly easy to keep…
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Shipping Faster Without Breaking Production
How the OLX India PWA team built a session-scoped flag system directly into their SSR pipeline — cutting merge time from 4 days to 2 and tripling MR throughput without any new infrastructure.
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Ambient Mesh at Scale: Solving the Multi-Ingress Canary Problem at OLX India
Discover how OLX India migrated to a sidecar-less service mesh architecture. Learn how we adopted Istio Ambient Mesh to secure our internal traffic, unlock advanced observability, and slash our projected infrastructure costs by nearly 90% without a single pod restart.
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Redefining Event Ingestion with a Cost-Efficient Design – The Success Story
At scale, the most dangerous four words in engineering are – this is how it’s done. Here’s the story of how questioning that assumption led us to rethink event ingestion from the ground up and cut our infrastructure costs by 90%.