Browse Definitions :

BACKGROUND IMAGE: iSTOCK/GETTY IMAGES

This content is part of the Essential Guide: How to implement a successful SaaS business model
Definition

stateless app

Contributor(s): Ivy Wigmore

A stateless app is an application program that does not save client data generated in one session for use in the next session with that client. Each session is carried out as if it was the first time and responses are not dependent upon data from a previous session. In contrast, a stateful application saves data about each client session and uses that data the next time the client makes a request.

When an application is stateless, the server does not store any state about the client session. Instead, the session data is stored on the client and passed to the server as needed. This is an important consideration when developing apps with offline first in mind. In this approach to software development, session data is stored locally on the end user’s device when internet connectivity is unavailable and uploaded and replicated in the cloud when a connection becomes available.

The distributed architecture that makes horizontal scalability possible in cloud computing has driven renewed interest in stateless apps and stateless app components. One reason is because when an app’s components are stateless, they can easily be redeployed in the event of a failure and scaled out to accommodate load changes. Another reason is that when apps are stateless, they can easily be connected to other apps through application program interfaces (APIs).

Functional programming, which is often used for microservices and containerization, has also driven interest in stateless apps. Functional programming is an approach to software development that uses very small segments of immutable code. Each function executes its task as if it was for the very first time and is aware of, but not dependent upon, other functions in the program. Because all the program's parts are stateless, programmers can assemble functions in multiple ways without having to worry about dependencies breaking the program. 

This was last updated in May 2017

Continue Reading About stateless app

Join the conversation

1 comment

Send me notifications when other members comment.

Please create a username to comment.

IMHO the first paragraph is confusing and should use "request" instead of "session" in several places.

A stateless app is an application program that does not save client data generated in one session request for use in the next session request with that client. Each session request is carried out as if it was the first time and responses are not dependent upon data from a previous session request. In contrast, a stateful application saves data about each client session and uses that data the next time the client makes a request.
Cancel

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • compliance audit

    A compliance audit is a comprehensive review of an organization's adherence to regulatory guidelines.

  • regulatory compliance

    Regulatory compliance is an organization's adherence to laws, regulations, guidelines and specifications relevant to its business...

  • Whistleblower Protection Act

    The Whistleblower Protection Act of 1989 is a law that protects federal government employees in the United States from ...

SearchSecurity

SearchHealthIT

SearchDisasterRecovery

  • cloud insurance

    Cloud insurance is any type of financial or data protection obtained by a cloud service provider. 

  • business continuity software

    Business continuity software is an application or suite designed to make business continuity planning/business continuity ...

  • business continuity policy

    Business continuity policy is the set of standards and guidelines an organization enforces to ensure resilience and proper risk ...

SearchStorage

  • business impact analysis (BIA)

    Business impact analysis (BIA) is a systematic process to determine and evaluate the potential effects of an interruption to ...

  • RAID (redundant array of independent disks)

    RAID (redundant array of independent disks) is a way of storing the same data in different places on multiple hard disks to ...

  • dedicated cloud

    A dedicated cloud is a single-tenant cloud infrastructure, which essentially acts as an isolated, single-tenant public cloud.

Close