Apex Liberation: The Evolution of FlexQueues
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This document discusses the evolution of asynchronous Apex processing in Salesforce, including @future, Queueable, and Batch Apex. It provides code examples of implementing these different asynchronous patterns. It highlights how features like the Flex Queue and enhancements to @future and Batch Apex have expanded asynchronous processing capabilities over time. It also notes some considerations like job ordering and management that developers should keep in mind when leveraging asynchronous Apex at scale.
![The evolution of @future - Queueable
public class AsyncExecutionExample implements Queueable, Database.AllowsCallouts {
public void execute(QueueableContext context) {
Account a = new Account(Name='Acme',Phone='(415) 555-1212');
insert a;
}
}
ID jobID = System.enqueueJob(new AsyncExecutionExample());
AsyncApexJob jobInfo = [SELECT Status,NumberOfErrors FROM AsyncApexJob WHERE
Id=:jobID];](https://image.slidesharecdn.com/pctqhcl8q2oj5jxm1z0x-signature-7873c75031ac31677418d06ca1135ba58cf1db5a062456d83a04778887726afe-poli-151012220105-lva1-app6892/85/Apex-Liberation-The-Evolution-of-FlexQueues-14-320.jpg)
![The evolution of @future - Queueable
public class AsyncExecutionExample implements Queueable, Database.AllowsCallouts {
public void execute(QueueableContext context) {
Account a = new Account(Name='Acme',Phone='(415) 555-1212');
insert a;
}
}
ID jobID = System.enqueueJob(new AsyncExecutionExample());
AsyncApexJob jobInfo = [SELECT Status,NumberOfErrors FROM AsyncApexJob WHERE
Id=:jobID];
Supported but
undocumented](https://image.slidesharecdn.com/pctqhcl8q2oj5jxm1z0x-signature-7873c75031ac31677418d06ca1135ba58cf1db5a062456d83a04778887726afe-poli-151012220105-lva1-app6892/85/Apex-Liberation-The-Evolution-of-FlexQueues-15-320.jpg)
Apex Liberation: The Evolution of FlexQueues
- 1. Apex Liberation : The evolution of Flex Queue Carolina Ruiz Medina Principal Developer, Product Innovation team cruiz@financialforce.com @CarolEnLaNube @CodeCoffeeCloud Stephen Willcock Director, Product Innovation swillcock@financialforce.com @stephenwillcock
- 2. Carolina Ruiz Medina Principal Developer, Product Innovation Team at FinancialForce.com cruiz@financialforce.com @CarolEnLaNube @CodeCoffeeCloud
- 3. Stephen Willcock Director, Product Innovation at FinancialForce.com swillcock@financialforce.com @stephenwillcock foobarforce.com
- 4. About GREAT ALONE. BETTER TOGETHER. • Native to Salesforce1™ Platform since 2009 • Investors include Salesforce Ventures • 650+ employees, San Francisco based 4
- 5. Heavy lifting • Normal Execution limited by Apex Governors • Number of records to process • CPU Time • Heap Size Working Synchronously
- 7. Making light work Higher limits in Asynchronous • @future • Queueable • Batch • Pipeline (pilot)
- 8. Execute when there are available resources @future Process a higher number of records Increased Governor Limits in Async We don’t have job id for @future jobs as @future does not return anything The method does not necessarily execute in the same order is called We can’t monitor @future jobs Parameters must be primitive data types
- 9. @future - show me the code! public with sharing class FutureClass { @future static void myMethod(String a, Integer i) { System.debug(’Primitive variable' + a + ' and ' + i+’But I run ASYNCHROUNOUSLY'); // ALL THE LOGIC HERE } }
- 10. We can track/monitor the batch jobs: DataBase.executeBatch returns Id We can only run 5 concurrent jobs Batch Apex We can chain batch jobs Possibility to use iterator and process different objects (or none) We cannot reorder or set priorities Process up to 50M records
- 11. Batch Apex - show me the code! public class UpdateAccountFields implements Database.Batchable<sObject>{ public final String Query; public final String Entity; public final String Field; public final String Value; public UpdateAccountFields(String q, String e, String f, String v){ Query=q; Entity=e; Field=f;Value=v; } public Database.QueryLocator start(Database.BatchableContext BC){ return Database.getQueryLocator(query); } public void execute(Database.BatchableContext BC, List<sObject> scope){ for(Sobject s : scope){s.put(Field,Value); } update scope; } public void finish(Database.BatchableContext BC){ } } Simple Batch Apex Examples
- 12. Async Limits Execution Governors Batch start Batch execute Batch finish @future Queueable 250,000 method calls in a 24 hour period Scheduled
- 13. The Evolution… of Async Apex
- 14. The evolution of @future - Queueable public class AsyncExecutionExample implements Queueable, Database.AllowsCallouts { public void execute(QueueableContext context) { Account a = new Account(Name='Acme',Phone='(415) 555-1212'); insert a; } } ID jobID = System.enqueueJob(new AsyncExecutionExample()); AsyncApexJob jobInfo = [SELECT Status,NumberOfErrors FROM AsyncApexJob WHERE Id=:jobID];
- 15. The evolution of @future - Queueable public class AsyncExecutionExample implements Queueable, Database.AllowsCallouts { public void execute(QueueableContext context) { Account a = new Account(Name='Acme',Phone='(415) 555-1212'); insert a; } } ID jobID = System.enqueueJob(new AsyncExecutionExample()); AsyncApexJob jobInfo = [SELECT Status,NumberOfErrors FROM AsyncApexJob WHERE Id=:jobID]; Supported but undocumented
- 16. The evolution of @future – Enhanced Futures (pilot) @future (limits=2xHEAP) public static void myMemoryHog() { } @future (limits=3xCPU) public static void myIntenseLogicalProcessing() { } Blogged June 2014: Bigger Apex Limits with Enhanced Futures
- 17. The evolution of Batch Apex…
- 18. The evolution of Batch Apex - Flex Queue Spring 15 Flex Queue introduced 95 Batch Apex jobs in the Flex Queue waiting to be processed + 5 concurrent Batch Apex processes Reorder Flex Queue items via a Flex Queue UI Summer 15 Reorder Flex Queue items programmatically (pilot) Winter 16 Reorder Flex Queue items programmatically GA
- 19. Reordering Flex Queue items programmatically Summer 15: Boolean isSuccess = System.moveFlexQueueJob(jobId, positionNumber); Winter 16: Boolean isSuccess = FlexQueue.moveBeforeJob(jobToMoveId, jobInQueueId); Boolean isSuccess = FlexQueue.moveAfterJob(jobToMoveId, jobInQueueId); Boolean isSuccess = FlexQueue.moveJobToEnd(jobId); Boolean isSuccess = FlexQueue.moveJobToFront(jobId); The evolution of Batch Apex - Flex Queue Show me the code! Release Notes: FlexQueue Class New Methods
- 20. Abort Flex Queue jobs and processing jobs in the same way: system.abortJob(jobId); The evolution of Batch Apex - Flex Queue Show me the code!
- 21. • Proof of Concept • Manage Flex Queue jobs • Lightning Components Introducing… BatchMan Brad Slater @innovativebrad
- 22. Demo
- 23. The further evolution of Batch Apex Spring 15 Flex Queue introduced 95 Batch Apex jobs in the Flex Queue waiting to be processed + 5 concurrent Batch Apex processes Reorder Flex Queue items via a Flex Queue UI Summer 15 Reorder Flex Queue items programmatically (pilot) Winter 16 Reorder Flex Queue items programmatically GA ??? Programmatically determine current Flex Queue order Queueable jobs in Flex Queue
- 24. What can Flex Queue Do for us? 1. Queue up to 100 jobs rather than killing any more than 5 2. Batch Apex no longer limited to admins – if you build an App for your users 3. We can implement our own prioritization mechanism
- 25. …. Rememeber, with a great power, comes great responsibility
- 26. …. Remember, with great power, comes great responsibility 1. Consider the effect of new job status value on existing Batch management code 2. Consider the possibility of jobs never being processed 3. Processes may be dependent on one another - strategy for chaining jobs in the Flex Queue 4. Multiple processes managing the Flex Queue (currently no ability to read the current order)
- 27. Recap 1. Having Several Async Processes 1. @future 2. Queueable 3. Batch Jobs 2. What to do now? Which one to use? Always batch? 1. You should use the one that better fits to your necessity …. The power is now in your hands!!
- 28. Thank you