Single Server Setup Quiz
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Questions and Answers

What is the format of the response when retrieving user information with a given ID?

  • HTML format
  • CSV format
  • JSON format (correct)
  • XML format
  • Which type of database would be suitable for storing unstructured data?

  • Hierarchical database
  • SQL database
  • Relational database
  • NoSQL database (correct)
  • What is a primary advantage of horizontal scaling over vertical scaling?

  • More redundancy (correct)
  • Lower cost
  • Higher performance
  • Simpler setup
  • Why might a developer choose a relational database over a non-relational database?

    <p>Relational databases support join operations</p> Signup and view all the answers

    Which of the following best describes vertical scaling?

    <p>Adding more power to existing servers</p> Signup and view all the answers

    One major limitation of vertical scaling is that it:

    <p>Has a hard limit on resource addition</p> Signup and view all the answers

    Which of the following is NOT a category of non-relational databases?

    <p>Tabular stores</p> Signup and view all the answers

    What is a significant feature of NoSQL databases?

    <p>They generally do not support join operations</p> Signup and view all the answers

    What is the primary purpose of the Domain Name System (DNS) in a single server setup?

    <p>To translate domain names into IP addresses</p> Signup and view all the answers

    Which components are included in a single server setup?

    <p>Web app, database, cache, and others</p> Signup and view all the answers

    What is the role of HTTP in the request flow?

    <p>To send requests and receive responses between clients and the server</p> Signup and view all the answers

    Which of the following best describes the relationship between web applications and mobile applications in terms of traffic source?

    <p>Web applications handle business logic while mobile applications use HTTP</p> Signup and view all the answers

    Why is JSON commonly used as an API response format?

    <p>Because it is simple and lightweight for data transfer</p> Signup and view all the answers

    Study Notes

    Single Server Setup

    • All components of a system run on a single server: web app, database, cache, etc.
    • Requests are handled through the Domain Name System (DNS), which translates domain names to IP addresses.
    • Hypertext Transfer Protocol (HTTP) requests are then sent to the web server, which returns HTML pages or JSON data.
    • Traffic originates from both web applications (server-side languages like Java, Python and client-side languages like HTML, JavaScript) and mobile applications (communicating via HTTP protocol with JSON data).
    • An example of a JSON response is provided, illustrating data retrieval from a user profile.

    Database

    • When user base grows, a single server becomes insufficient, necessitating multiple servers.
    • Splitting web/mobile traffic (web tier) and database (data tier) allows independent scaling.
    • Choosing a database: relational databases (RDBMS or SQL) like MySQL, Oracle, and PostgreSQL, store data in tables and rows, enabling join operations across tables.
    • Non-relational databases (NoSQL) like CouchDB, Neo4j, Cassandra, HBase, and Amazon DynamoDB, are categorized as key-value stores, graph stores, column stores, and document stores. They generally do not support join operations.
    • Relational databases are often preferred due to their maturity and proven track record, while non-relational databases are suitable for:
      • Super-low latency requirements.
      • Unstructured data.
      • Large data storage needs.
      • Serialization and deserialization of data (JSON, XML, YAML).

    Vertical Scaling vs Horizontal Scaling

    • Vertical scaling (scale up) involves adding more power (CPU, RAM) to existing servers.
    • Horizontal scaling (scale-out) involves adding more servers to the resource pool.
    • Vertical scaling is simpler for low-traffic situations but has limitations due to hardware limits and lack of failover/redundancy.
    • Horizontal scaling is more desirable for large-scale applications.

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    Description

    Test your knowledge on setting up a single server system that includes a web app, database, and cache. Understand the role of DNS in handling requests and the importance of scaling to multiple servers as user base grows. This quiz covers key concepts related to web architecture and database choices.

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