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Salesforce Architecture Basics

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This architecture basics document provides an overview of areas where the underlying architecture of the Salesforce Platform creates a key consideration for the architectures of solutions built on the platform.   Salesforce Architecture Basics There are three essential areas to understand when designing architectures on the Salesforce Platform: Transactions Metadata Versus Data Platform APIs Platform Multitenant Architecture Salesforce Platform delivers reliable, scalable, and easy-to-customize end-user experiences using its unique software architecture for cloud computing Platform Sharing Architecture The Salesforce sharing model is an essential element in your organization's ability to provide secure application data access. Therefore, it's crucial to architect your sharing model correctly to meet your current and future data access requirements. In this document, we'll review data accessibility components, sharing model use cases, and real customer sharing solutions, and...
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Salesforce Architecture Diagrams

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Here are some resources to get you started using Salesforce architecture diagrams. Salesforce Architects | How to Build Salesforce Diagrams Salesforce Architects | Documentation and Implementation Diagrams The concept of using levels to convey different kinds of detail is common to many frameworks, including the C4 model which is used to visualize software architectures. The C4 model for visualising software architecture Getting Started with Salesforce Diagrams Diagramming Essentials How to Build Documentation and Implementation Diagrams | Trailhead Live Project Documentation for Salesforce B2C Commerce Functional Architects Salesforce Architecture Diagrams: Quick Look
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Salesforce Locker Service

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Salesforce Locker Service is a security architecture provided by Salesforce for Lightning components. It aims to improve the security of the Lightning Component Framework by enforcing stricter JavaScript security policies and DOM access restrictions. Locker Service enhances the security and stability of Lightning components Enabling Locker Service Provides the following features Namespace Isolation : Locker Service isolates Lightning components in their own namespace, preventing them from accessing or modifying components in other namespaces. This isolation helps prevent conflicts and ensures that components behave predictably. Secure DOM Access : Locker Service provides a secure wrapper around the Document Object Model (DOM), preventing Lightning components from accessing or modifying elements outside of their own DOM hierarchy. This helps mitigate security vulnerabilities such as cross-site scripting (XSS) attacks. Strict JavaScript Context: Locker Service enforces strict JavaScript...
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Salesforce MVC Architecture

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Salesforce MVC Architecture Salesforce uses a Model-View-Controller (MVC) architecture, which is a software design pattern that separates the representation of information (the model) from the user's interaction with it (the view and the controller) Salesforce Platform Architecture The Salesforce platform uses a multi-tenant, metadata-driven architecture, which allows for high customization and extensibility.  This architecture includes: A single instance of the Salesforce kernel that serves all tenants Tenant-specific metadata that is used to dynamically materialize applications Comprehensive testing and deployment processes to ensure reliability Overall, Salesforce's MVC architecture, combined with its multi-tenant, metadata-driven platform, enables the development of highly customizable, scalable, and maintainable applications. Key Components of Salesforce MVC: Model (Database Layer) : The schema and data in Salesforce, represented by sObjects (Salesforce objects). This is t...
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Floating Menu on Visualforce Page

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Here's an example to create a floating menu. <apex:page > <html> <body> <style> div.floating-menu {position:fixed;background:#fff4c8;border:1px solid #ffcc00;width:150px;z-index:100;} div.floating-menu a, div.floating-menu h3 {display:block;margin:0 0.5em;} </style> <div class="floating-menu"> <h3>Floating Menu</h3> <a href="http://www.quackit.com/css/">CSS</a> <a href="http://www.quackit.com/html/">HTML</a> <a href="http://www.quackit.com/javascript/">JavaScript</a> <a href="http://www.quackit.com/coldfusion/">ColdFusion</a> <a href="http://www.quackit.com/myspace/codes/">MySpace Codes</a> </div> </body> </html> </apex:page> 
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What Is Standard Controller In Visualforce?

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In Visualforce, a standard controller is a pre-built Apex controller provided by Salesforce that allows developers to work with standard database objects (such as records from Salesforce objects like Account, Contact, Opportunity, etc.) without having to write custom Apex code. Standard controllers provide basic CRUD (Create, Read, Update, Delete) operations and other standard functionality for interacting with these objects in Visualforce pages. When using a standard controller in Visualforce, you can directly reference fields and perform operations like saving records without explicitly writing Apex code. Standard controllers also handle security and access permissions automatically, ensuring that users only have access to the records they are authorized to view or modify. Here's a basic example of using a standard controller in Visualforce: <apex:page standardController="Account">     <apex:form>         <apex:inputField value="{!Account.N...
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What Is Standard List Controllers In Visualforce?

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Standard List Controllers in Visualforce provide developers with a way to display lists of records from standard or custom Salesforce objects without the need for writing Apex code explicitly. These controllers come pre-built with basic functionality for navigating, filtering, and working with collections of records. Here are some key points about Standard List Controllers: Built-in CRUD Operations: Standard List Controllers provide basic CRUD operations (Create, Read, Update, Delete) out-of-the-box, allowing users to view, edit, and delete records directly from Visualforce pages without writing custom Apex code. Automatic Pagination: When displaying a large set of records, Standard List Controllers automatically handle pagination, splitting the records into manageable chunks and providing navigation controls for users to navigate between pages. Sorting and Filtering: Standard List Controllers offer built-in support for sorting and filtering records based on various criteria, such as f...
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What is Visualforce Controllers ?

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A Visualforce controller is a set of instructions for what happens when a user interacts with components specified in associated Visualforce markup. One type of interaction is when a user clicks a button or link. Controllers also provide access to the data displayed in a page, and can modify component behavior. A developer can either use a standard controller provided by Lightning Platform, or add custom controller logic with a class written in Apex: A standard controller consists of the same functionality and logic that is used for a standard Salesforce page. For example, if you use the standard Accounts controller, clicking a Save button in a Visualforce page results in the same behavior as clicking Save on a standard Account edit page. If you use a standard controller on a page and the user doesn't have access to the object, the page displays an insufficient privileges error message. Resolve this error by checking the user's accessibility for an object and displaying compo...
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How is Visualforce Architected?

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All Visualforce pages run entirely on the Lightning platform, both when a developer creates the page, and when an end user requests a page, as shown in the following architecture diagrams. Visualforce System Architecture - Development Mode   When a developer finishes writing a Visualforce page and saves it to the platform, the platform application server attempts to compile the markup into an abstract set of instructions that can be understood by the Visualforce renderer. If compilation generates errors, the save is aborted and the errors are returned to the developer. Otherwise, the instructions are saved to the metadata repository and sent to the Visualforce renderer. The renderer turns the instructions into HTML and then refreshes the developer's view, thereby providing instantaneous feedback to the developer for whatever changes were made in the markup. The architecture diagram below shows the process flow when a non-developer user requests a Visualforce page. Because the page ...
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