Notes from building Lima: real problems we hit, the fixes we shipped, and what we would do differently.https://mowaveone.com/enhttps://mowaveone.com/blog/flutter-vs-react-native-2026/https://mowaveone.com/blog/flutter-vs-react-native-2026/We build Lima in Flutter. Not because React Native is bad. The new architecture fixed most of what was wrong with it. Here's the actual reasoning behind the choice.Wed, 29 Jul 2026 12:00:00 GMThttps://mowaveone.com/blog/how-lima-reached-25k-users/https://mowaveone.com/blog/how-lima-reached-25k-users/No paid ads, no PR agency, no influencer deals. Lima grew to 25k active users entirely through organic channels, starting in the Spring Boot community and spreading from there.Wed, 29 Jul 2026 12:00:00 GMThttps://mowaveone.com/blog/the-etag-that-never-matched/https://mowaveone.com/blog/the-etag-that-never-matched/A response envelope timestamp was silently busting every ETag on Lima's hot endpoints. Here's the deep ETag approach that fixed it.Wed, 22 Jul 2026 12:00:00 GMThttps://mowaveone.com/blog/brazilian-ninth-digit-whatsapp/https://mowaveone.com/blog/brazilian-ninth-digit-whatsapp/Brazilian mobile numbers gained a ninth digit years ago, but WhatsApp still identifies many users by the old eight-digit form. If you match users by phone, this will bite you.Thu, 09 Jul 2026 12:00:00 GMT