Top Local Databases for React Native Mobile App Development in 2021

Local Databases for React Native

React Native has become one of the primary choices to develop cross-platform applications. It is also a cost-efficient solution to develop a mobile app quickly. The demand for React Native app development has grown substantially in the past few years. Developers are asked to develop high-performance offline first apps that are easily scalable.

It has made the mobile app developers think about the platform and tech stack to build a React Native app efficiently. React Native database (DB) is the backbone of application, hence, it should be selected with proper due diligence.

What to Know Before Selecting React Native Database?

The Complexity of the Data

Key-value storage is the default option for multiple client-side scripting languages and server-sides. Majorly both keys and values have to be kept in a serial in strings either through a library or by a React Native developer. However, serialization can cause serious issues and halts affecting the app performance, especially when it is working in the limited resource environment of a smartphone with a complex data set.

Hence, a database is selected to help you store data with greater complexity in comparison to the key-value pairs like objects and full documents.

Number of Lines of Code

If over 20 lines of code are required to write a CRUD operation, then you should not be looking for an advanced database. Advanced databases for React Native app development will make the coding complicated and will also affect the performance of DB significantly. It can also increase the cost of React Native development. On top of that, processing multiple code lines will only slow down the app.

Hence, avoid using advanced databases that may dwindle the app experience and slow down the release speed.

Synching of the Offline Data

You should go with a simple database for apps with lower complexity and no multiple-user collaboration. It would work better along with simple synchronized functionality. These apps can be synced easily with a server in the presence of an internet connection.

However, if collaboration is one of the primary features of your application then you need to go with a complex database to facilitate seamless syncing. Apps like Trello, leverage complex databases to ensure all the documents are in sync on all the devices.

Handling Data Conflicts and Concurrency

Possibility of a data conflict is directly proportional to the number of collaboration features your app has. It is advisable to go with a database that shares the conflict handling policies on the repository pages or website. Read database documents thoroughly to understand how databases handle syncing and conflicts. Also, check out the trade-offs that are done and how it can affect your application.

Memory Management

Your app can crash due to inadequate memory management. Compaction is one of the most used processes of memory management. It deletes the data or documents that are no longer in use. This process ensures that there is always some free memory available at any point in time.

These 5 factors will give you a fair idea on which local React Native database to select for your mobile application.

Top Local Databases for React Native App Development

1. Realm

Realm was built to develop offline and real-time apps that work on both smartphones and wearables. It is equally beneficial for React Native mobile applications for Android and iOS. It is built on top of SQLite or on ORM. Hence, it comes with its own database engine and never relies on key value stores.

Realm is one of the most preferred databases to develop high-performance apps or handle large chunks of data. With React Native app development, Realm is best for large mobile apps.

Benefits of Realm:

  • Realm Sync runs in the background to record service requests and user interactions locally
  • Redux offline can help you implement offline-first architecture easily
  • Leverages multiple encryption standards for different mobile platforms

2. Firebase

Firebase works with real-time NoSQL DB to develop React Native apps. It is selected primarily for its data synchronization and offline data change capabilities. It is capable of handling M and C of the MVC required for React Native apps.

Benefits of Firebase:

  • Firebase ensures real-time syncing of data for all clients at the same point in time. It is an important feature for apps that abruptly go offline due to disruption in the internet connectivity
  • It comes with a cross-platform API that requires minimal setup. Also, no application server is needed to access data as you access it directly by a smartphone
  • You can develop applications with offline persistence capabilities. It would include marking the presence of user offline or online and storing timestamp whenever the user goes offline

3. SQLite

SQLite was developed to provide local storage for mobile apps. Lite means that it is a lightweight library that needs minimal setup efforts. You can also integrate it within the mobile app to access the database directly.

Benefits of SQLite

  • Being an ACID-compliant database, it implements all SQL standards with a few omissions. It has file-based library architecture and comes equipped with tools capable of handling all data types efficiently
  • You can use a react-native-SQLite-storage plugin to manage data within the mobile app for offline persistence

4. PouchDB

PouchDB is a Javascript database. The open-source DB stores the data in JSON format. It allows developers to leverage the advantages of React Native easily through reading, developing, querying, updating, and deleting queries via a single JavaScript API. It is compatible with CouchDB, MongoDB, MySQL, and PostgreSQL.

Benefits of PouchDB:

  • There is no need to run queries over the network as PouchDB remains inside a browser. It helps in faster execution of queries
  • Sync data with a supported server to run apps both online and offline

5. Async Storage 

It is a local storage system that enables developers to persist data between application reboots while storing the data locally. Async Storage is in-built with React Native to help you use it for any additional deployment.

Benefits of Async Storage:

  • It is an excellent solution to save the data required by the app even after the app or device is closed by the user

6. Watermelon DB

It is built on SQLite and offers the potential to scale thousands of recordings without affecting the speed of the mobile app. Watermelon DB is optimized perfectly to develop complex apps on React Native with real-world performance.

Benefits of Watermelon DB:

  • It offers an offline first system
  • You can develop cross-platform mobile apps on SQLite foundation
  • Offers stating typing with flow

7. Vasern 

Vasern is an open-source and lightweight database for React Native app development. You can use the Vasern API for local data storage, cloud storage, and syncing across application’s clients. Its structure and design are inspired by multiple open source databases.

Benefits of Vasern DB:

  • Offer end-to-end syncing of database
  • Focuses on performances and consistency
  • Faster operations

8. BerkeleyDB 

BerkeleyDB offers a faster performing backend to enable React Native developers to handle data in several ways efficiently. Its API is compatible with multiple languages including Android and iOS.

It is capable of handling data in multiple ways including how SQLite does or through Value/Key pair data as byte arrays and also support several data items for one key.

Benefits of Berkeley DB:

  • Support concurrent access for several users
  • Offers industrial-strength transaction support
  • Easy to use

In Summary

Apart from the above mentioned best local databases for React Native app development, developers also use other multiple backend tools to develop mobile applications. The right React Native database also depends on the project type. Get in touch with our React Native experts to understand how we can help you.

About the Author

QA InfoTech

QA InfoTech

Established in 2003, with less than five testing experts, QA InfoTech has grown leaps and bounds with three QA Centers of Excellence globally; two of which are located in the hub of IT activity in India, Noida, and the other, our affiliate QA InfoTech Inc Michigan USA. In 2010 and 2011, QA InfoTech has been ranked in the top 100 places to work for in India.

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