93 prompts
You are a cloud solutions architect. App: [description] Expected traffic: [users, requests] Data: [types, size] Budget: [monthly] Team experience: [details] Propose an architecture (with a Mermaid diagram), choose managed services with reasoning, cover security, backups, monitoring, scaling, rough cost drivers, and a…
Design a cost-aware cloud architecture that fits your app's traffic, budget and team.
You are a performance-focused backend engineer. App and slow parts: [details] Data freshness requirements: [details] Stack: [details] Recommend what to cache and where (HTTP, application, database query), cache keys, TTLs, invalidation strategy, cache-aside vs write-through, protecting against cache stampedes, and cod…
Speed up your app with the right caching approach and avoid stale-data bugs.
Act as a senior iOS developer. iOS target: [version] Screen: [purpose and elements] Data: [model and source] Navigation: [details] Write a SwiftUI view with a view model (ObservableObject or @Observable), loading/error/empty states, accessibility labels, Dynamic Type support, previews, and comments.
Build a clean SwiftUI screen with state, navigation and accessibility.
Analyse the time and space complexity of this code. ``` [paste] ``` Explain the Big-O line by line in simple terms, identify the bottleneck, describe what happens with 10× and 1000× more data, and suggest a more efficient approach if one exists, with code.
Understand your code's time and space complexity and where it will slow down at scale.
Act as a senior software architect. Project type: [web app, API, mobile app, library] Stack: [details] Team size and expected growth: [details] Features: [list] Propose a folder structure (with explanation of each folder), layering (e.g. routes, services, data access), naming conventions, where tests live, configurati…
Organise a new or growing project with a clean, scalable folder structure and conventions.
Act as a senior Next.js developer. Next.js version and router: [e.g. 15, App Router] Page: [purpose] Data source: [API/database] Styling: [Tailwind / CSS modules] Write the page using server components where appropriate, a client component for interactivity, loading and error UI, metadata for SEO, caching/revalidation…
Build a Next.js page or route with data fetching, loading and error states and SEO metadata.
You are a Node.js backend engineer focused on security. Requirements: [user fields, roles, routes] Database: [details] Write an Express app with: password hashing (bcrypt/argon2), login returning a short-lived access token plus refresh token handling, auth middleware, role checks, input validation, rate limiting on lo…
Build a secure Node.js/Express API with sign-up, login, protected routes and token handling.
You are a database performance expert. Database: [PostgreSQL / MySQL / SQL Server] Query: ```sql [paste] ``` Table sizes and existing indexes: [details] EXPLAIN output (if available): [paste] Explain why it's slow, suggest indexes (with trade-offs), rewrite the query if helpful, and estimate the improvement. Mention h…
Speed up a slow query with index suggestions, rewrites and an explanation of the query plan.
Write a [Python / Node.js] script to transform data. Input format and sample: [paste] Desired output format and sample: [paste] Rules: [renames, filters, calculations, date formats] The script should read from a file, handle missing or malformed values, log problems, write the output file, and be easy to rerun. Includ…
Convert, clean and reshape data between JSON, CSV and other formats with a reusable script.
Act as a QA-minded backend engineer. Framework and test tool: [e.g. Jest + Supertest, pytest + httpx, PHPUnit] Endpoints: [list with expected behaviour] Auth: [method] Database setup: [test DB, fixtures] Write integration tests covering success cases, validation errors, auth failures and not-found cases, with setup/te…
Test your API endpoints end to end, including the database, auth and error responses.
You are a test automation engineer. App: [URL/type] Critical user journeys: [e.g. sign up, log in, checkout, create item] Test environment details: [test accounts set up via seed data] Write Playwright tests in [TypeScript/Python] using resilient selectors (roles, labels, test IDs), page objects, test data setup, and…
Write reliable browser tests for your most important user journeys.
Review the code below and improve its logging and error handling. Language/framework: [details] Logging tool: [details] Code: ``` [paste] ``` Add: structured logs with useful context (without secrets or personal data), appropriate log levels, custom error types where helpful, user-safe error messages, retries for tran…
Make failures easy to diagnose with structured logs, meaningful errors and safe messages for users.