Angular Signals Best Practices I Apply in Production

Short summary

A production-tested guide to Angular Signals best practices covering four core rules: always produce new references on signal writes, keep computed() pure with no side effects, avoid syncing signals inside effect() (use linkedSignal() instead), and route template-derived values through computed() rather than method calls. Each rule includes real code examples from a gym member management app and revenue dashboard.

• •Every signal write must produce a new reference — no in-place mutation
• •Keep computed() pure: no HTTP calls, no side effects, no writes to other signals
• •Use linkedSignal() for overridable derived values instead of effect()-based syncing

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