Improving User Response Time with Heroku AppLink
Summary
Heroku AppLink enables Salesforce teams to offload heavy Apex processing to a more scalable Heroku environment while retaining seamless control flow and user context. It offers synchronous integration for interactive tasks like creating Quotes from Opportunities, overcoming Apex limits such as CPU and heap constraints, as well as asynchronous batch processing with Apex callbacks for complex workloads. Developers can leverage Node.js on Heroku to run faster, unrestricted code and then hand control back to Apex, improving predictability and scalability without abandoning Apex skills or the Salesforce DX toolchain. The article shares code examples, setup instructions, and architectural patterns to help Salesforce professionals integrate Heroku AppLink effectively.
Takeaways
- Use Heroku AppLink to bypass Apex CPU and heap limits via Node.js integration.
- Implement synchronous Apex calls to Heroku for immediate, uninterrupted processing.
- Leverage asynchronous Heroku workers with Apex callbacks for batch job processing.
- Maintain user context and permissions seamlessly across Salesforce and Heroku.
- Use AppLink-generated types and interfaces to simplify integration and callbacks.
An app is often judged by its features, but equally important is its durability, confidence, and predictability in the tasks it performs – especially as a business grows; without these, you risk frustrating users with unpredictable response times or worse random timeouts . As Apex developers we can reach out to Queuables and Batch Apex for more power – though usage of these can also be required purely to work around the lower interactive governor limits – making programming interactive code more complex. I believe you should still include Apex in your Salesforce architecture considerations – however now we have an additional option to consider! This blog revisits Heroku AppLink and how it can help and without having to move wholesale away from Apex as your primary language ! This blog comes with full source code and setup instructions here .