Some read paths want a denormalized shape without materializing a new table. Postgres views are a clean option. Keep the view definition in a migration and map it with a read-only model.

Endpoints with optional filters often devolve into messy SQL string concatenation. I prefer building queries with squirrel so I can conditionally add WHERE clauses while keeping the final query parameterized. The pattern also helps keep ordering stabl

Mixins let me compose view behavior without duplication. LoginRequiredMixin is essential for protecting views. I create custom mixins like UserOwnershipMixin to encapsulate common patterns. Mixin order matters due to Python's MRO—I put Django's mixins

Multipart uploads can blow up memory if you parse them naively. With busboy, I stream file data as it arrives and enforce size limits and content-type checks early. I avoid writing to disk unless I need it; for many flows I stream directly to object s

StoreKit enables selling digital goods and subscriptions within iOS apps. I request product info from App Store Connect with product identifiers, then display prices in the user's currency. Purchase flows use SKPaymentQueue to add transactions, which

ConfigMaps store non-sensitive configuration as key-value pairs. Secrets store sensitive data like passwords, tokens, and certificates in base64 encoding. Both can be consumed as environment variables or mounted as files. ConfigMaps created with kubec

Indexes dramatically speed up queries but slow down writes. B-tree indexes handle equality and range queries—default for most databases. I create indexes on foreign keys, frequently queried columns, and WHERE/ORDER BY clauses. Composite indexes order

Not all queries benefit from a full-table index, especially when most rows are ‘inactive’ or archived. A partial index lets you index only the subset you care about (like active users or un-deleted records), which shrinks index size and improves cache

Compound components create flexible, composable APIs by sharing state between parent and child components via context. Instead of passing dozens of props, child components access shared state through context. A Select component might have Select.Trigg

Kubernetes orchestrates containerized applications at scale. Deployments manage ReplicaSets ensuring desired pod count. Services expose pods with stable endpoints. ConfigMaps externalize configuration. Secrets store sensitive data. Resource limits pre

Rust's #[derive] attribute auto-generates trait implementations for common traits like Debug, Clone, PartialEq, and Serialize. This eliminates boilerplate and ensures consistency. For example, #[derive(Debug)] generates a debug formatter that prints a

For slow endpoints, I like a skeleton placeholder rather than a blank area. Turbo Frames make this easy: render a “loading skeleton” inside the frame tag as the initial content, then set src so Turbo fetches the real content. When the response arrives