Questions tagged [asynchronous]
An asynchronous process is a process or function that executes a task "in the background" without the user having to wait for the task to finish. Typically, you will use Asynchronous programming for callouts to external systems, operations that require higher limits, and code that needs to run at a certain time.
51
questions
15
votes
1
answer
9k
views
How do I test asynchronous Apex?
This is a canonical question and answer developed by the community to help address common questions. If you've been directed here, or your question has been closed as a duplicate, please look through ...
27
votes
4
answers
26k
views
Can Queueable solve "Future method cannot be called from a future or batch method"?
I have code that must be called as @future as it requires all the resources one can get. The only problem is that in 1% of the cases this code is called from a Batch and therefore fails with
System....
- 37.3k
22
votes
4
answers
4k
views
@future runs in test without Test.stopTest() - Can that be?
For the last years I expected all async Apex means not to run in tests when there is no Test.stopTest() in my test code.
But now I have a test without this call and a future method is called.
I ...
- 37.3k
27
votes
1
answer
5k
views
Dramatic increase in AsyncApexJob latency
Problem
Salesforce is a multi-tenant platform and as a consequence the time for an asynchronous request to be dequeued may vary. This is not a problem for us, as long as the delays stay within ...
- 271
36
votes
10
answers
2k
views
How can I cause side effects outside an execution context?
I've got a scenario that relies on the system's "automatic rollback" behaviour to undo any DML, emails, futures and so on, in the case of an error. Basically, by allowing code to throw an unhandled ...
- 32.5k
12
votes
1
answer
3k
views
Testing scheduled apex containing @future method?
I've seen plenty of posts and documentation on testing asynchronous apex in general, but what about code with multiple layers of asynchronous code?
Specifically, I have a scheduled apex class which ...
- 3,752
11
votes
3
answers
43k
views
Error "Too many queueable jobs added to the queue: 2"
I've been looking for similar questions, but none of them applies to my scenario, so I'd be grateful if you can explain me why my logic is failing, and what can I do in order to fix it.
I want to run ...
- 179
8
votes
2
answers
4k
views
System.AsyncException: Maximum callout depth has been reached
I have a System.Queuable job, on a particular Sandbox that is giving me issues. It works fine on other Orgs, but fails on this particular one.
The job structure is this:
Batch Apex job calls System....
- 16.6k
5
votes
2
answers
785
views
Spin locks with variable time retry backoffs
Use Case
After insert triggers start Queueable
Queueable execute() contends for same resource, uses spin lock to wait for resource availability. Many queueables could be running at same time.
...
- 69.8k
4
votes
1
answer
3k
views
Does Test.stopTest() cause ALL waiting asynchronous functions to fire?
For practice, I'm composing on a unit test for a Schedulable class:
/**
* Example of scheduling Apex Batch Processing
* @see Apex Workbook, page 68
**/
global class WARE_CleanMerchandiseScheduler ...
- 4,508
0
votes
1
answer
863
views
Want to create Record in batch class and there is no record to query in start method
I had one batch class in which i am passing some data required for creating object record.But when i call that batch class from parent class variables are initialized but start method are not called ...
0
votes
3
answers
1k
views
Can Queueable run in parallel with calling transaction?
SimpleQueueable.cls:
public with sharing class SimpleQueueable implements System.Queueable{
public void execute(System.QueueableContext ctxt){
//query the record inserted in calling ...
- 8,787
17
votes
1
answer
3k
views
Do Platform Event Triggers process synchronously? Do they get a fresh set of limits?
I'm intrigued by Platform Events, but I have a few questions about how they operate:
Are the subscription triggers processed synchronously or asynchronously?
The developer guide makes it clear that ...
- 149k
16
votes
2
answers
6k
views
Governor Limits on System.enqueueJob in Asynchronous Apex – Documentation Wrong?
Is there any execution context which uses asynchronous governor limits and allows up to 50 jobs to be queued with System.enqueueJob in a single transaction, or is Salesforce’s documentation just wrong?...
- 760
15
votes
3
answers
1k
views
Batch Apex in AppExchange package and orgs with related triggers that call @Future methods
Here's the problem: when an org has a trigger that calls an @Future method, any batch Apex that fires that trigger will fail, since you cannot call an @Future method from an @Future method OR from ...
- 4,328
10
votes
0
answers
806
views
Implement Domain Event Pattern in Apex - can and should it be done?
In Domain Driven Design a single pattern is drawing a lot of attention to itself - Domain Events and Event Queues.
(slide via http://de.slideshare.net/andysal/never-mind-the-bollocks-heres-the-domain-...
- 37.3k
10
votes
1
answer
1k
views
Are @future methods ignored in @TestSetup blocks?
Ok, this is going to become a quite long question. The main goal is to document strange platform behavior and maybe learn more why this happens.
It all started with that test which failed because ...
- 37.3k
10
votes
2
answers
1k
views
Guarantee only a single asynchronous job runs at a time
This is a bit of an odd one. We are interacting with an external system that does not support concurrency due to a bug which they are struggling to fix. We perform a HTTP callout, the callout takes ...
- 1,071
8
votes
3
answers
2k
views
Build Custom Batch Queue to centrally manage Batches & circumvent the Max. 5 Batches in parallel
Just assume you had an app that would have to process huge amounts of records in an org in multiple ways each day. For each "way" you have a separate Batchable class and those are triggered ...
- 37.3k
6
votes
2
answers
626
views
How to mix getContentAsPDF calls with DML?
This critical update:
PageReference getContent() and getContentAsPDF() Methods Treated as
Callouts
will be auto-activated in January 2016.
We have some code that uses a queue of custom event ...
- 135k
6
votes
2
answers
1k
views
How to test @future methods with setup objects and avoid MIXED_DML_OPERATION
I’m in a situation where I have to use a future method to avoid MIXED_DML_OPERATION error.
I have a trigger that runs after INSERT on USER and creates a custom object X. They are in 1:1 relation. ...
- 1,171
6
votes
2
answers
2k
views
Rerender apex:details after DML async method call
I have found a strange behaviour and I can't find why does it happening. I have custom object Test2_c with custom text field Status_c. I want to change it's status asynchronously, so I prepare a VF ...
- 171
5
votes
1
answer
1k
views
How can I synchronize processing in Apex?
I have a custom Object TaskEvent with an Event Type and a Task ID
Throughout the life-cycle of the task I will receive events such as
Start Event
Routing Event
End Event
I receive a web request ...
- 182
5
votes
1
answer
352
views
Best approach to make callouts from trigger
I have a requirement in which, for each time an account is inserted, I have to make a callout to an external system sending some data of the record and then the API returns a unique Id that I have to ...
- 895
5
votes
1
answer
2k
views
Are aura:waiting and aura:doneWaiting component specific events?
Good afternoon everyone,
I have a question regarding the use of the aura:waiting and aura:doneWaiting system events. I currently have two nested child components within a container component as you ...
- 1,388
5
votes
3
answers
545
views
Tracking errors in batch impossible as Dev Console stops logging or breaks with Server error
When single batch jobs fail only the last one is party shown in the Apex Logs page. This is not enough for debugging.
A better way ist to check the log entries that are written per batch execute.
...
- 37.3k
4
votes
2
answers
4k
views
What's the difference between AsyncApexJob and CronTrigger?
Roughly I know that when I schedule a Schedulable, I'm creating both a CronTrigger and an AsyncApexJob, but I'm confused as to how the two objects relate to each other and what the significance of ...
- 75
4
votes
2
answers
2k
views
In an unit test for an LWC, how can I prove an async chain is setting a value in a lightning-formatted-number?
I am trying to prove that the price is being set on the component.
I have the following HTML:
<template>
<h1>Current price of a bitcoin in Euro</h1>
<lightning-formatted-...
- 4,508
4
votes
1
answer
1k
views
Batch execute is slow because of huge unused gaps in DevConsole timeline
I have a long running batch that is taking days to execute and creates millions of records. To speed it up I used the profiling tools of the Developer Console.
Per batch execute() I see this timeline
...
- 37.3k
4
votes
1
answer
288
views
Does Apex Engine maintains old version of apex code for Async Apex?
Suppose I have a batch running that is processing millions of records(that would take hours), then I deploy a code during execution that changes the batch logic, will remaining record get processed ...
- 35.8k
3
votes
2
answers
5k
views
Asynchronous getContent hit org.apache.commons.httpclient.RedirectException: Maximum redirects (100) exceeded
we're having an issue with getContent() in asynchronous context, and I just can't find any way to work around it... We're exposing invocable Apex in our managed package, and one of them allow our ...
- 83
3
votes
2
answers
903
views
Unable to do callout from PostInstall Script
As per the Salesforce documentation, Post-Install script can perform callouts using an async operation only.
https://help.salesforce.com/articleView?id=apex_post_install_script.htm&type=5
So, I ...
- 447
3
votes
1
answer
884
views
Custom Logging and Future Methods
I have been reading up on the custom logging, DML, and exceptions but haven't seen anything that talks about @Future methods and exceptions.
I have two scenarios:
A Button is clicked on a Lead, ...
- 3,431
3
votes
1
answer
2k
views
Testing multiple asynchronous processes
I have a test that for it's data setup I need to fire multiple asynchronous processes. I have a suspicion, that they do not finish sequentially one after another.
I think Test.startTest()/Test....
- 4,016
3
votes
1
answer
330
views
How to monitor not yet started jobs of a Queuable chain
I am wrapping my head around how to use Apex Queuable as a queue and not as a chain.
As I understand all the code samples out there, the next job is enqueued after the work of the previous one is done....
- 37.3k
2
votes
2
answers
4k
views
How to synchronize asynchronous Apex
There are different ways to offload long-running processes to asynchronous apex: we got future calls, scheduled Apex, batch Apex and, more recently, Queueable Apex.
They are all good to launch "fire ...
- 4,026
2
votes
2
answers
859
views
Queueable being called from a trigger by an Asynchronous Process
Recently we moved our logic in our trigger to be asynchronous and now the helper method that the triggers call looks something like this (specifics obfuscated since it's company code):
global static ...
- 41
2
votes
1
answer
436
views
LWC enforce and validate an API method before calling another method
I'm looking to enforce a validation of sort to be implemented in LWC that consumes an external API.
The validation call is suppose to check user access (an APEX based external API validation).
Then ...
- 5,900
2
votes
1
answer
816
views
How to know when the last batch job in parallel execution finishes?
I have an apex class that is executed in parallel by calling Database.executeBatch() in a loop, where each instance processes a chunk of a dataset.
After all the jobs that were executed finish I need ...
- 2,887
2
votes
1
answer
690
views
How can I make multiple Http callouts in a row?
I need to build an apex class that will perform multiple callouts in a row to an external system and upsert some records.
Right now I'm sending a POST method with a query in the body and getting an ...
2
votes
1
answer
172
views
Heuristics to decide if to run an operation sychronous or asynchronous
Im our app we recently had to switch many operations from short running synchronous calls to asychronous Batch or future calls. It helps us overcome the many limits but also introduces many other ...
- 37.3k
2
votes
0
answers
2k
views
How to Launch Asynchronous Record Triggered Flow each time a Date Field is updated
I have a date field. I want to update the record every time this field is updated. Inside of the Record Triggered Flow I have an ISCHANGED condition and am seeing the following error when I try to ...
- 423
1
vote
1
answer
1k
views
Best way to add a progress bar to indicate loading?
I've got a complex process that takes about thirty seconds to execute, depending on how many records are in the org. I can estimate the completion percentage by iterating a count variable in my for ...
- 174
1
vote
1
answer
2k
views
What is the life-cycle of static properties in Apex classes?
Sometimes when developing Apex, I've populated some static property.
But then later -- most often in an Async or Test context -- I go to access it again and discover SFDC is behaving like it is ...
- 4,508
1
vote
3
answers
2k
views
Future method in trigger causes batch failures
I've recently been asked to convert a method in our account trigger to a future method to help reduce CPU errors during execution. When attempting to run all test classes in my org (for a completely ...
- 9,441
0
votes
2
answers
2k
views
Making Callout from Apex triggers [duplicate]
I have a Apex Trigger which makes the callout to the External system when a field in a record is updated. The Apex Trigger and the Callout method are like below
trigger updateLocation Account (after ...
- 667
0
votes
1
answer
438
views
Choose async or sync based on amount of data returned or trigger size?
Can anybody guide me through any framework which I can refer in order to achieve this use case?I am not able to get my head around it on how to do it efficiently.
I want to process records in near ...
- 163
0
votes
2
answers
231
views
Service console waits for aura component to finish init before rendering case
I have an aura component (as managed package) in service console. the component fetches case's fields (via soql), sends them to an external server, gets a response, and displays it. everything works ...
0
votes
0
answers
737
views
Time-based Workflow Schedule Date keeps getting pushed forward 5 minutes
I created a record triggered after update flow that tests if a field has changed in the entry criteria, allowing me to create an async path:
When a record is updated, the immediate path executes, ...
- 4,937
0
votes
1
answer
213
views
Deleting Scheduled Job versus Aborting job?
What will happen if the scheduled job is deleted and what happen if it is aborted.
Do we have any significant difference
- 65