Designing Scalable Frontend Systems

Design the frontend of a cryptocurrency exchange order book with buy and sell options, illustrating real-time bids, asks, queue priority, and price matching for a scalable user interface.

Explore the ten interview expectations for frontend design questions, from blog diagram and tech stack choice to API schema, failure scenarios, component identification, pseudocode, and clear communication.

Differentiate high level design and low level design: solution architects draft macro views of the system, while developers detail inner component logic to form a complete solution.

Learn to sketch a high level design for a cryptocurrency exchange order book, detailing sellers at the top, buyers at the bottom, and buy/sell options for specified amounts.

Illustrate high level frontend architecture from a user through a front-tier client to a mid-tier orchestrator and a db client, with templates and APIs for scalable systems.

Design a template based rendering unit by organizing core components and wrappers inside the frontier client, with a rendering engine and deployment pipelines to ensure accessibility, theming, reusability, and extensibility.

Explore the high level design of a scalable frontend system, detailing how components, rendering engines, client–mid-tier interactions, media services, and database access fit together from high to low level design.

Dive into low level design for scalable frontend systems by analyzing the given diagram, placing the block on the canvas, and outlining the approach in the upcoming 30 minutes.

This lecture presents a four-step sequence for low level design: choose libraries and tech stack, identify components, define api schemas, and write pseudocode, demonstrated with block layouts.

Assess the tech stack, popularity, core features, flexibility, and integration ease when choosing a frontend framework. Consider server-side rendering, mobile form factor, community support, documentation, future backing, and market adoption.

Design a scalable frontend stack with React and Redux, a UI library, unit testing with React Testing Library, and backend communication via Axios or GraphQL with Apollo.

Identify and name all UI components in the order book, including buy and sell order forms, amount inputs, buy/sell buttons, and price and amount lists.

Define the api schema for buy and sell requests for btc with usd, including place buy order and place sell order, and fetch the order book data in json format.

Define the template as a generic, domain-logic-free, array-based rendering unit that uses components from a pool (heading, input, buy button) to render a buy order.

Design a generic pseudocode for an order book ui by unifying the order form into a single reusable component, fetch orders with useEffect, and manage state for buy and sell.

Identify tech stack and React choice; map components; define schemas for by request, send request, and getting all orders; design a generic rendering template and draft pseudocode.

Follow a user-driven sequence to fetch order book data via the frontier client and mid-tier service, then query the database client for a transformed response.

Extend a sequence diagram to show a user placing a buy order, sending post data for BTC purchase through the mid-tier service to the database, and receiving a response.

Design a frontend solution for an order book, covering high-level and low-level design with a component-based rendering engine and templates, plus API schemas for placing, buying, and selling bitcoin orders.

Prepare to ace your design round by focusing on nitty-gritty aspects and presenting them in the right fashion, signaling to interviewers your thoughtful coverage of all design aspects.

Discover micro-frontends as a modular architecture that splits a monolith into independent frontend modules, enabling autonomous teams, diverse tech stacks, and scalable, maintainable deployments, while balancing complexity and network overhead.