Picking Right API
Salesforce provides programmatic access to your organization’s information using simple, powerful, and secure application programming interfaces.
When to Use REST API
REST API provides a powerful, convenient, and simple REST-based Web services interface for interacting with Salesforce. Its advantages include ease of integration and development, and it’s an excellent choice of technology for use with mobile applications and Web projects. However, if you have a large number of records to process, you may wish to use Bulk API, which is based on REST principles and optimized for large sets of data.
WHEN TO USE SOAP API
SOAP API provides a powerful, convenient, and simple SOAP-based Web services interface for interacting with Salesforce. You can use SOAP API to create, retrieve, update, or delete records. You can also use SOAP API to perform searches and much more. UseSOAP API in any language that supports Web services.
For example, you can use SOAP API to integrate Salesforce with your organization’s ERP and finance systems, deliver real-time sales and support information to company portals, and populate critical business systems with customer information.
WHEN TO USE CHATTER REST API
Chatter REST API provides programmatic access to Chatter feeds and social data such as users, groups, followers, and files. Use Chatter REST API to integrate Chatter into a variety of applications such as mobile applications, intranet sites, and third-party Web applications. Chatter REST API is similar to APIs offered by other companies with feeds, such as Facebook and Twitter.
WHEN TO USE BULK API
Bulk API is based on REST principles and is optimized for loading or deleting large sets of data. You can use it to query, insert, update, upsert, or delete a large number of records asynchronously by submitting batches which are processed in the background by Salesforce.
SOAP API, in contrast, is optimized for real-time client applications that update small numbers of records at a time. Although SOAP API can also be used for processing large numbers of records, when the data sets contain hundreds of thousands of records, it becomes less practical. Bulk API is designed to make it simple to process data from a few thousand to millions of records.
The easiest way to use Bulk API is to enable it for processing records in Data Loader using CSV files. This avoids the need to write your own client application.
WHEN TO USE METADATA API
Use Metadata API to retrieve, deploy, create, update, or delete customizations for your organization. The most common use is to migrate changes from a sandbox or testing organization to your production environment. Metadata API is intended for managing customizations and for building tools that can manage the metadata model, not the data itself.
The easiest way to access the functionality in Metadata API is to use the Force.com IDE or Force.com Migration Tool. These tools are built on top of Metadata API and use the standard Eclipse and Ant tools respectively to simplify the task of working with Metadata API. Built on the Eclipse platform, the Force.com IDE provides a comfortable environment for programmers familiar with integrated development environments, allowing you to code, compile, test, and deploy all from within the IDE itself. The Force.com Migration Tool is ideal if you want to use a script or a command-line utility for moving metadata between a local directory and a Salesforceorganization.
WHEN TO USE STREAMING API
Use Streaming API to receive notifications for changes to data that match a SOQL query that you define.
Streaming API is useful when you want notifications to be pushed from the server to the client. Consider Streaming API for applications that poll frequently. Applications that have constant polling action against the Salesforce infrastructure, consuming unnecessary API call and processing time, would benefit from this API which reduces the number of requests that return no data.Streaming API is also ideal for applications that require general notification of data changes. This enables you to reduce the number of API calls and improve performance.
WHEN TO USE APEX REST API
Use Apex REST API when you want to expose your Apex classes and methods so that external applications can access your code through REST architecture. Apex REST API supports both OAuth 2.0 and Session ID for authorization.
WHEN TO USE APEX SOAP API
Use Apex SOAP API when you want to expose your Apex methods as SOAP Web service APIs so that external applications can access your code through SOAP. Apex SOAP API supports both OAuth 2.0 and Session ID for authorization.
WHEN TO USE TOOLING API
Use Tooling API when you want to manage and deploy working copies of Apex classes and triggers and Visualforce pages and components, set checkpoints or heap dump markers, execute anonymous Apex, and access logging and code coverage information.
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