Learn about the ideal database choice for a Node.js mobile news feed app on Google Cloud, including key features like zonal resiliency, low latency, ACID compliance, offline mode, and more.
Table of Contents
Question
You are designing a Node.js-based mobile news feed application that stores data on Google Cloud. You need to select the application’s database. You want the database to have zonal resiliency out of the box, low latency responses, ACID compliance, an optional middle tier, semi-structured data storage, and network-partition-tolerant and offline-mode client libraries. What should you do?
A. Configure Firestore and use the Firestore client library in the app.
B. Configure Bigtable and use the Bigtable client in the app.
C. Configure Cloud SQL and use the Google Client Library for Cloud SQL in the app.
D. Configure BigQuery and use the BigQuery REST API in the app.
Answer
A. Configure Firestore and use the Firestore client library in the app.
Explanation
When designing a Node.js-based mobile news feed application that stores data on Google Cloud, Firestore is the best choice for the app’s database.
Firestore provides zonal resiliency out of the box, meaning data is automatically replicated across multiple zones within a region to protect against zonal failures. This ensures high availability for your app.
It offers low latency responses, which is critical for a news feed app where users expect content to load quickly as they scroll. Firestore is optimized for fast reads and writes.
Firestore is also ACID (Atomicity, Consistency, Isolation, Durability) compliant. It guarantees that transactions are processed reliably, data remains consistent, and changes are durably saved even if errors occur. ACID compliance is important for a news app to avoid data loss or inconsistencies.
With Firestore, you have the option to use Cloud Functions as a middle tier between your app and the database. This allows you to execute complex logic and data transformations on the server.
Firestore supports semi-structured data storage using a NoSQL document data model. This provides flexibility to store news articles with varying fields and structures, without having to adhere to a fixed schema.
Importantly, Firestore provides network-partition-tolerant and offline-mode client libraries for Node.js. This means your app can continue working even if the user loses internet connectivity. Changes made while offline are synced when connectivity is restored.
Using the official Firestore client library in your Node.js app allows you to easily read, write, and query data using a native SDK. It handles things like authentication, efficient connection management, local data caching for offline mode, and more.
In summary, Firestore is the ideal choice for a Node.js-based mobile news feed app on Google Cloud, providing key capabilities like zonal resiliency, low latency, ACID transactions, offline mode, NoSQL flexibility, and an easy-to-use client library. Configuring Firestore and using its native client library will allow you to build a highly scalable and performant news app.
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