7 min read
Instant Cold Starts with a Persisted TanStack Query Cache (Part 5)
Persist the TanStack Query cache per wallet for instant cold starts, with sync writes at lifecycle edges plus batching and retries under rate limits.
Blog
Articles about web development, performance, and open source.
- 14 min read
Derived Wallet State Without Melting the CPU (TanStack Query, Part 4)
Stop re-deriving wallet state per component: compose in cached queries and hoist fan-outs into Context so expensive work runs once.
- 6 min read
Cut Wallet API Calls with Change Detection in TanStack Query (Part 3)
Gate expensive wallet queries behind a cheap "latest transaction" poll so balances refetch only when an address actually changes.
- 9 min read
You Can't Wipe a Secret in JavaScript, but You Should Try
How I found the Alephium wallet's 24-word recovery phrase sitting in plain text in RAM on every unlock, and the defense-in-depth work it took to wipe secrets from memory across an Electron and a React Native wallet.
- 9 min read
Migrating Redux Server State to TanStack Query (Part 2)
How I moved server state from Redux Toolkit into TanStack Query in two production wallets, one query at a time, without a big-bang rewrite.
- 7 min read
Why Async State Broke Our Crypto Wallets (TanStack Query Case Study, Part 1)
Case study from two Alephium wallets: tangled Redux thunks, a self-inflicted API DDoS, and slow updates that pushed us to TanStack Query.
- 12 min read
Speeding Up Cold Start of a React Native app
A Metro and lifecycle post-mortem of optimizing the startup time of the Alephium mobile wallet.
- 6 min read
Giving OpenClaw Safe Access to Your Obsidian Vault
How I gave my self-hosted AI assistant read access to my entire Obsidian vault and restricted write access to a single folder, without risking my notes.
- 12 min read
From Callbacks to Promises: Same Patterns, Less Pain (part 2)
Rebuilding the same sequential, parallel, and limited-concurrency exercises with promises and async/await, and watching the manual bookkeeping disappear.
- 14 min read
Mastering Async Callbacks in Node.js, Without the Complexity (part 1)
The web spider example from Node.js Design Patterns lost me. Here are the simple exercises I used to finally internalize callback-based async control flow.
- 5 min read
Syncing Obsidian Across Devices with Syncthing and a Home Server
A step-by-step guide to setting up Syncthing on a Proxmox home server, macOS, and Android to sync an Obsidian vault - no cloud services required.
- 8 min read
How I Shrunk a Blockchain SDK by 88%: Modernizing @alephium/web3
A deep dive into modernizing the @alephium/web3 TypeScript SDK - replacing polyfills, consolidating crypto libraries, fixing the build system, and cutting bundle size from 742 kB to 207 kB.