Many cloud-dependent applications suffer from latency and require constant internet connectivity, leading to interruptions and delays. Users often experience 'reconnecting' messages or slow loading times, even with stable internet, because applications must 'phone home' before functioning. This reliance on remote servers can disrupt workflow and diminish the user experience.
Local-first applications prioritize writing data directly to the user's hard drive, with cloud synchronization occurring in the background. This design ensures immediate responsiveness and functionality, even without an active internet connection. For example, Linear, a project tracker, achieves operation speeds of around 47ms, significantly faster than traditional cloud tools that can take 3,000ms or more for similar tasks.
When data resides solely on remote servers, users are effectively tenants, losing access if the service experiences outages. Local-first software treats the network as an enhancement rather than a requirement, keeping user data on their local disk. This model provides resilience against cloud outages, such as those seen with AWS and Azure, ensuring continuous access to work.
The argument that complex tasks, particularly AI, require extensive server farms is becoming outdated. Advances in hardware, including Apple's Neural Engine and new silicon from Qualcomm and Nvidia, enable devices to run capable AI models locally. Tools like Ollama and Apple's Foundation Models framework facilitate local execution of language models, eliminating the need for constant server interaction for AI-driven features.
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A growing trend in software development favors local-first applications, which prioritize immediate local data writing and background cloud synchronization. This approach addresses issues of speed, internet dependency, and data ownership commonly found in cloud-only applications, with modern hardware now capable of running complex tasks like AI models locally.