Web & Mobile

Nodes answer questions about blocks, not about your application. This guide covers building an index that is queryable, survives reorgs, backfills correctly, and stays consistent.

Streaming makes a slow model feel fast and introduces new interface problems. This guide covers progressive rendering, cancellation, mid-stream failure, and showing what the system is doing.

Most tokens have no function beyond being sold. This guide covers whether a token is warranted, how supply and distribution shape behaviour, and the failure patterns that repeat.

Zero-knowledge proofs solve two distinct problems — privacy and verification cost — and most projects that adopt them need neither. This guide covers what they do and when they fit.

Running your own nodes is an operational commitment, not a one-time deployment. This guide covers hardware, sync, monitoring, upgrade handling, and when a provider is the better answer.

Oracles are where most on-chain systems meet the outside world, and where many of them fail. This guide covers oracle designs, manipulation risk, staleness, and fallback behaviour.

A DeFi protocol operates in permanently adversarial conditions where every economic edge is found and exploited. This guide covers the architecture decisions that determine whether it holds.

Most NFT projects fail on infrastructure rather than on contracts. This guide covers metadata, durable storage, minting mechanics, and the standards that determine whether assets survive.

Stablecoin integration looks simple until decimals, chain choice, and reconciliation surface. This guide covers the engineering and operational work that makes settlement predictable.

Accessibility is a legal obligation in many jurisdictions and a quality requirement everywhere, and AI interfaces add new patterns to get right. This guide covers the standards and where obligations come from, what conformance requires in practice, building accessibility into design systems and delivery pipelines, automated and assistive-technology testing, accessible AI interaction patterns, and the documentation that demonstrates compliance.

Scalability problems arrive in a predictable order, and so do their solutions. This guide covers stateless application tiers behind load balancers, caching at every layer, database strategies in sequence, asynchronous processing for spiky and AI work, scaling model calls through a gateway, load testing before it matters, and the architecture decisions that avoid rewrites.

Wallet integration is mostly interface work, and most of it is done badly. This guide covers connection, chain switching, signatures, transaction state, and errors users can act on.

Cross-platform versus native is the most consequential mobile decision and the one most often made by default. This guide covers where each genuinely wins and how to choose for your actual constraints.

Flutter performance problems are usually rebuild scope, unbounded lists, or image decoding. This guide covers diagnosing them properly and the fixes that matter on low-end devices.

Compose is straightforward until recomposition gets out of hand. This guide covers state hoisting, stability, list handling, navigation, and the View interoperability boundary.

Most mobile analytics implementations collect hundreds of events and answer no questions. This guide covers event design, identity, funnels, retention cohorts, and the privacy constraints that shape all of it.

Push notifications are the most direct channel an app has and the fastest way to get uninstalled. This guide covers earning permission at the right moment, notification types and the value each must deliver, frequency and relevance controls, AI-driven personalization and timing, platform rules and deliverability, measurement beyond open rates, and the mistakes that get apps muted.

React Native performance work usually starts in the wrong place. This guide covers render scope, list configuration, bridge traffic, images, and startup — measured on hardware users actually have.

React Server Components let components render on the server and send HTML without JavaScript, while client components handle interactivity. This guide explains the model, the boundary rules between server and client, data fetching and streaming, the mistakes that erase the benefits, and when the model pays off for content-heavy and AI-driven interfaces.

Users expect interfaces to update without refreshing: dashboards that move, collaboration that shows others' cursors, AI answers that stream token by token. This guide covers choosing a transport, synchronizing state and handling conflicts, presence and collaboration patterns, scaling persistent connections, streaming AI output, and the reliability practices that keep live features live.

Upgradeable contracts trade immutability for the ability to fix bugs, and that trade has to be made deliberately. This guide covers proxy patterns, storage rules, and upgrade governance.

Super apps bundle many services, payments, messaging, commerce, transport, into one application with shared identity and wallet, often opening a mini-program platform to partners. This guide covers the platform model, the architecture that keeps a super app fast and secure as services multiply, partner governance, AI assistants that span services, and whether the model fits a given market and company.

SwiftUI is productive until state ownership gets muddled. This guide covers the patterns that hold up at production scale: state, decomposition, navigation, performance, and the UIKit boundary.

Most A/B test implementations produce numbers that look precise and mean nothing. This guide covers assignment, sample size, metric choice, the traps that invalidate results, and when not to test.