Queueable apex can be called from the Future and Batch class. Queueable apex and future method both run sdfs asynchronously but queueable apex provides these additional benefits. Queueable. Unlock the power of both Batchable and Queueable Apex with the easily extendable DataProcessor pattern, which I’ll detail in this post. The Transaction Finalizers feature enables you to attach actions, using the System. Best Answer chosen by Phuc Nguyen 18. The order of events is preserved within each batch. You can now set a maximum stack depth of Queueable jobs, overriding the default limit of five in Developer and Trial Edition orgs. Batchable <sObject>, Database. Queuable Advantage: Queueable can run parallelly and there no limit for chaining. 0. getDescribe(); Any help is appreciated- I have updated Queuable code above for reference –This Apex allows you to submit jobs for asynchronous processing similar to future methods. Once you surpass a chain depth of 4, Salesforce will slow you down to 15 seconds between executions. In future methods, we cannot pass sojects for reasons future methods being executed at a later point of time, by the time it is executed the sboject data could be stale. Share. Batch Apex operates over small batches of records, covering your entire record set and breaking the processing down to manageable chunks. " Is anyone aware if that limit is higher in a future methods or queueable apex? Generally, limits are relaxed in an asynchronous context with apex, but I can't find anything talking about callout limits specifically. Queueable Apex in a Before Trigger. startTest () and test. Each async class should have a constructor that takes a String job id and retains it for the duration of its processing, and then passes that same id along when it initializes and fires the next job, along the way also updating the status of the job. Follow edited Dec 6, 2022 at 16:22. I have a chained queuable apex class making an HTTP request to an external server. You can add up to 50 jobs to the queue with System. One can also argue since Batch Apex has its own limits and you can only queue and simultaneously run five of them in your org, having enhancements to. Even if two transactions. Queueable Apex is similar to Future Methods with an extra set of features and capabilities. Please note the specific numbers for chain depth and. The maximum number of asynchronous Apex method executions (batch Apex, future methods, Queueable Apex, and scheduled Apex) per a 24-hour period: 250,000 or the number of user licenses in your org multiplied by 200, whichever is greater You will have to balance it all out. Going into the docs I read the following 2 confusing statements:The command updates checkpoints in your org, sets (and deletes upon completion) trace flags, and generates a new debug log. The first iteration passed unit and functional testing, but was found to cause Apex CPU. An Apex trigger can receive a batch of events at once. I want to run the execute method of a Queueable Apex class. We have to implement the Queueable interface to make the class queueable. No, I don't believe the order of execution for Queueable Apex is defined. This interface enables you to add jobs to the queue and monitor them. If you like the videos then subscribe to the channelSalesforce Training TutorialsYour Salesforce App on This Channel:PLAYLIST:Finalizers feature provides the capability to add actions to be taken when asynchronous jobs succeed or fail. I strongly feel that this is. apex; future; queueable-apex; Share. Apex 一括処理またはスケジュール済み Apex. The Apex Batch Job, at the top of its execute () method, sets the variable to true. In order to prevent a crash from killing your transaction entirely, I would suggest a Batchable class (or you could Queueable with Finalizer, but that may be overkill). Salesforce has four asynchronous apex ( Queueable Apex, Scheduled Apex, Batch Apex, Future Methods) to run code asynchronously to handle different need of business application. List<AsyncApexJob> batchJobs = [ SELECT ApexClassId FROM AsyncApexJob WHERE JobType = 'BatchApex' AND Status = 'Processing' // OR Status = 'Queued'ADD ANY OTHER CONDITION THAT YOU WANT ]; Using above piece of code you can check. This is generally true for the other asynchronous types, as well (e. CPU time on the Salesforce servers: 10. Thus the callout issues are omitted. Chaining Job:- In Queueable Apex we can chain one job to another. To test future methods, enclose your test code between the startTest () and stopTest () test methods. This requires some changes to how we build and structure. Schedulable is what you want if you want a delay. StringException: You can't abort scheduled Apex jobs by calling System. To assign the value to the member variable, use this. I need something where I get the job ids upfront when I enqueue my jobs so I can later monitor. Queuable Apex - chaining jobs vs calling other classes synchronously. Sorted by: 1. Starting multiple child jobs from the same queueable job isn’t supported. As I understand all the code samples out there, the next job is enqueued after the work of the previous one is done. enqueueJob(queueable, asyncOptions)Sep 1, 2017. Database. It's strongly recommended that you simply schedule 3 jobs. The following code sample shows how to test the execution of a queueable job in a test method. 32. g. So my question as I am enqueuing only one class. 0. In this example, we use static resources and a mock interface later on. APEX. g. batch. It was probably easier and safer for salesforce to create a new framework/interface, than the modify the existing @future implementation without breaking existing apex code. Unlike future methods, they can have non-primitive data types such as sObjects and custom Apex Types to be passed. 1. try and make each queueable do as much batched work as possible to avoid chaining; UPDATE V57. 2 100. deepClone (true,true,true))); Or. Create an Apex class called 'AddPrimaryContact' that implements the Queueable interface. every transaction boundary (specific to the apex jobs or future calls inside test class). S. Why I want to do that: To increase debugging speed. After each request comes back with a successful response, the next class will fire and make another request to a different endpoint on the same server. Please note the specific numbers for chain depth and. Syntax: @future. And saw that Flex queue was still empty, as Queueable is not inserted to flex queue. GitHub Link :- for Completion of Apex Specialist S. My first thought about such a design. 4. asked Oct 12, 2020 at 10:29. ) The thing is there are over 30k contacts and I'm only able to retrieve the first 1000 (5 executions with 200 contacts) before I hit the stack depth limit. Callout and chain Queueable - Spring 17. emails list is empty by default, which may be sufficient for synchronous work. I did tried to approach the solution per @Jeremy Nottingham on this post but not successful yet. Khyl Orser at korser@speedmechanics. Create a Queueable Apex class that inserts the same Contact for each Account for a specific state. Really not sure which one to use. Create Events Using the Event API Name: Create an event instance the same way that you create a Salesforce or custom object instance. Your two basic options are to either schedule three jobs (e. When you do this: System. The Apex Trigger checks the variable and skips the execution of the Queueable. System. A constructor is code that is invoked when an object is created from the class blueprint. I’ve been dreaming of writing this post for years — after getting burned with a. NB: There are certain limitations on what can be used as state for your queueable object's state; if the type you want to use does. I observe the followingSo I tried again by doing it in the queueable apex class. I have this class that call a Queueble job more than 50 times in a loop. In asynchronous transactions (for example, from a batch Apex job), you can add only one job to the queue with System. D Send a rickroll email to a contact. –>. Interviewee: A queueable job is an asynchronous process. 2. Queuable Apex - chaining jobs vs calling other classes synchronously. In Developer Edition orgs, the limit is 5. 2 Answers. It is annotation based so we can use the same apex class to write the future method. 2. 1. execute (null); Queueable q2 = new MySecondQueueable (q1); q2. For example, a developer could build an archiving solution that runs. Getting Id of your Job:- ID JobId =system. stopTest (); // So no chains will execute. This helps us avoid hitting governor limits while sending the messages by splitting it over multiple executions (the queueable chains itself as needed). Platform Events – Great for Event-based Architectures. execute(System. I want to launch my code as a queueable class, but I need to include a parameter. Using Non-primitive data types:-. You could easily bump into flex queue limits; an org allows up to 5 concurrently executing batches and then up to a further 100 in the flex queue. Using Batch Apex. The system executes all asynchronous processes started. Control Processes with Queueable Apex Create an Queueable Apex class that inserts Contacts for Accounts. To monitor or stop the execution of the batch Apex job, from Setup, enter Apex Jobs in the Quick Find box, then select Apex Jobs. This interface is implemented internally by Apex. But that is a chain and not a queue. This is an indirect way of calling a future method from the future method (A queueable class method acts as a. Developers can add business logic to most system events, including button clicks, related record updates, and Visualforce pages. To use batch Apex, write an Apex class that implements the Salesforce-provided interface Database. You can add up to 50 jobs to the queue with System. In Developer Edition orgs, the limit is 5. The system collects all asynchronous calls made after the startTest (). There's two general ways to go about this. 2k 3 3 gold badges 42 42 silver badges 62 62 bronze badges. Queuable Apex callout. 2. Apex methods with the future annotation that haven’t yet been executed. If you want to keep it as a future method, just pass in a list of up to 100 account Ids (less if you also need to get a token or some other callout), or use queueable, and you can chain them together. The enqueued method is using a future method to update contact records and there are no enqueued jobs in any other trigger. First, you could choose to simply "emulate" the chaining: Test. Thanks. abortJob with the parent CronTrigger ID. So I did some digging - I came across chaining batch jobs in the Finish Method and queueable jobs. I did a new experiment prompted by comments by the Apex PM that the queueable backoff time had been relaxed. at :00, :20, and :40), or have the job abort itself (System. I currently have in place a class which is scheduled to run nightly, the execute() of which looks like (some names changed to protect the innocent)Queueable Apex Simplified. Create a Queueable Apex class that inserts the same. Your logic is slightly flawed. (This Can Queueable solve "Future method cannot be called from a future or batch method"? confirms this works the opposite way round i. Here's what we get back: 15:42:44:004 USER_DEBUG [9]|DEBUG|Account Name. After each request comes back with a successful response, the next class will fire and make another request to a. While in a batch there is a limit of 100 batches; Queueable can be much faster than batch apex if used properly; This can be invoked from future method as well; Batch Advantage: Batch allows to query up to 50 million records in a start method (This is unique) The primary limitation you will face is throttling. you may want to do custom rollup calculations on opportunity save). Matt and Neil. Batchable and then invoke the class programmatically. startTest (); Test. You already stated you have a unit test for the queueable's execute () that verifies the callout is. The maximum event message size that you can publish is 1 MB. But, at the same time, the more advanced queuable apex accepts sobjects. Flows are really only meant for simple logic. LimitException: Too many queueable jobs added to the queue: 2. Again, when using a mock callout, the request isn’t sent to the endpoint. public class Cls_Location { @InvocableMethod (label='Get Device Id') public static void getCoordinates (List<Id>. enqueueJob returns null in a running test. Hot Network QuestionsAsynchronous Apex. I would also move the instantiation to reside solely in the constructor. Up to 100 batch jobs can be in the holding status. 1,710 2 2 gold badges 29 29 silver badges 88 88 bronze badges. 69. With the help of this interface, we can queue jobs and also monitor them, this is an enhanced way of running the asynchronous process as compared to the future method. When the execute method is called (by the system), the Queueable is rehydrated and the oppList, being static is lost - which is why it ends up null. Aug 24, 2020 at 14:10. To execute Apex as an asynchronous job, implement the Queueable interface and add the processing logic in your implementation of the execute method. Batch Apex: Batchable Apex is designed to allow for heavy asynchronous processing. Create an Apex class called 'AddPrimaryContact' that implements the Queueable interface. The AsyncApexJob records that represent the queued jobs don't have a concept of ordering (other than the created date). Using the interface is an enhanced way of running your asynchronous Apex code compared to using future methods. However, the end result for most use cases I'm guessing will be pretty much the same whether you use platform events, @future or Queueable. I cannot make you use it; I can only tell you why you should and give you incentive to do so. One approach you could take (this is fairly architecture-dependent) is a chained Queueable. Above code will not work when Event is being created from a queueable itself. For @futures and Queueable there is no concurrent limit, for Batch jobs there can be 100 queued Batch jobs in the flex queue. What is Queueable Apex ? Apex processes that run for a long time, such as extensive database operations or external web service callouts, can be run asynchro. Queueable Apex is a great new tool but there are a few things to watch out for: The execution of a queued job counts once against the shared limit for asynchronous Apex method. You can use Salesforce Batch apex or a Queuable to split the transactions into at least 4-5 transactions with 40-50 queries each. Getting an Id for a job. To chain a job to another job, submit the second job from the execute () method of your queueable class. Platform Events With Async Apex. Apex is great for building out complex automations that would be difficult or impossible to do with declarative automations such as Flows or Process Builders. LimitException: Too many SOQL queries: 101". Can the lstRequestBody contain more than one record ever? If yes, then that for loop is probably the issueCreate an Apex class called 'AddPrimaryContact' that implements the Queueable interface. Apex 一括処理またはスケジュール済み Apex. enqueueJobMastering Apex Programming will help you explore the advanced features of Apex programming and guide you in delivering robust solutions that scale. enqueueJob from a trigger context, i. Single Batch jobs will be Queueables that can be monitored on their own. enqueueJob () call (s) from your for loop in the batch class. Look at the sObject clone() method. e. To ensure that the queueable process runs within the test method, the job is submitted to the queue between the Test. Implementation of classes and methods must be declared as public or global. I have chained 1 child job. Using Constructors. My current workaround: 使用方法. 5k 7 107 260. 2. As a good dev I went to the docs to solve this problem. This limit is for your entire org and is shared with all asynchronous Apex: Batch Apex, Queueable Apex, scheduled Apex, and future methods. I have tested this in every asynchronous context that I’m aware of, and it appears that the true limit on asynchronous use of System. I have tried doing this but at some point I have to make a call that doesn't include parameters, i. They also share a benefit of having some higher governor limits than synchronous Apex, such as heap size limits. Why should we use Queueable apex when we can perform chaining of batches in batch apex (when we can call another batch in the finish method) 0. Asynchronous Apex. Finalizer interface, to asynchronous Apex jobs that use the Queueable framework. You can implement a Queueable class that acts as a Future method and then you can invoke another future method. I currently have in place a class which is scheduled to run nightly, the execute() of which looks like (some names changed to protect the innocent) Queueable Apex Simplified. Correct. e. 3. number of methods with the future annotation allowed per Apex invocation: 50: 0 in batch and future contexts; 1 in queueable context: Max. Devendra Devendra. Improve this question. So I am looking to implement Queueable jobs in apex to send 200 emails (1 job) every 30 minutes until all the jobs are done, I am struggling to find any documentation on how this functionality can be added so I figured I would ask the community, if anyone has ever implemented time delays between Queueable jobs. Those objects can be accessed when the job executes. It looks very similar to Batch Apex testing. Think of Queueable apex as Future 2. This option is appropriate when you need to start a long-running operation and get an ID for it, pass complex types to a job, or chain jobs. As Dan Appleman notes in the latest edition of Advanced Apex, a Queueable can call a Future method, and a Future method can enqueue a Queueable job. Writing test class is simple. 1 Answer. Use Apex code…The maximum number of future method invocations per a 24-hour period is 250,000 or the number of user licenses in your organization multiplied by 200, whichever is greater. If you need to process a high volume of jobs, this limitation can be problematic, as it hard caps you at <6k jobs/day on a single chain. FollowThe key difference can be found in the Queueable Apex documentation: Similar to future jobs, queueable jobs don’t process batches, and so the number of processed batches and the number of total batches are always zero. Everything runs nicely until the last line, where the API method is called and a map is passed. An Apex transaction is sometimes referred to as an execution context. The Apex flex queue has the maximum number of 100 jobs, Database. This solution is for Asynchronous Apex. Unlike future method, queueable has only execute. Those objects can be accessed when the job executes. Batchable calls were designed to allow for heavy asynchronous processing. apex; queueable-interface; Share. 使用される最大の理由は、大量のレコードを処理する必要があるからです。. In a quick test of the Queueable chaining where each execute added a small attachment, the attachments were a couple of seconds apart and in a dev org the chain dies with "Maximum stack depth has been reached. This way, the callout runs on a separate thread. It is useful in operations that involve both Batch and Future methods. scheduled-apex. It has all the functionalities of the future method along with the power of Batch Apex. It is useful when you need to perform operations at a specific time, such as sending an email or updating a record. Represents the parameter type of the execute () method in a class that implements the Queueable interface and contains the job ID. Why we can’t pass sObject in future methods? 39. There is no SLA so we have no idea when it will it execute, They can execute in just a second or can take hours. Apex now allows web service callouts from chained queueable jobs. 1. . Have your Queuable set Run_Queueable__c to false when it has nothing left to process, otherwise keep re-queueing itself until everything is done; Have a trigger on the queue items which does an upsert with the queueable name and Run_Queueable__c = true; This ensures that only one Queuable is running at once. I want to run the execute method of a Queueable Apex class. An Apex trigger can receive a batch of events at once. StopTest () call your class e. I need to create a HTTPPost method to generate a report so when I did it at first, I had exceeded the number of queries limit so I implemented a queuable class to solve the issue as I have read in the documentation. This is also true for Scheduled jobs, Batchable jobs, future methods, sending emails, calculating sharing rows, and almost any other type of asynchronous code or action that may exist in the future. g. This limitation has been removed now. Moreover Queueable apex supports getContent/getContentAsPDF () method. 0. The enqueued method is using a future method to update contact records and there are no enqueued jobs in any other trigger. It required a long time to process and was often used only to handle callouts or things that were slightly longer than a normal transaction could handle. The following code sample shows how to test the execution of a queueable job in a test method. This works perfectly during our testing. countQuery ('SELECT Count (' + fieldName. Current limit for number of such chained jobs can be 5. Apex を非同期ジョブとして実行するには、 Queueable インターフェースを実装し、 execute メソッドの実装に処理ロジックを追加します。. Controlling Processes with Queueable Apex. g. Getting Id of your Job:- ID JobId =system. e. While scheduled apex is awesome it's analgous to the unix tool "cron" - designed to run the same job on the basis of a consistent schedule. Hi Phuc, Change the batch as like below: global class UpdateLeaseQueueableBatch implements Database. Apex Future & Queueable methods are leveraged to execute Asynchronous Apex processes that will run in the background at a later time once resources become available. By creating and pushing Salesforce Batch Jobs in Apex Flex Queue, you can submit up to hundreds of jobs in a single queue. I understand that you could pass collection of Sobjects to Queueable apex classes but not to future methods where we're restricted to only primitive collections. This is expected behavior if you carefully read the documentation on how Test. Queueable Apex has the ability to (1) start a long-running operation and get an ID for it, (2) pass complex data types like sObjects to a job, and (3) chain jobs in a sequence. Improve this question. Queueable Apex limits. Is there a way to add data to an enqueued job? 0. e. We have an issue with queueable apex. Update 1 From comment - Initially Sf added this limitation where you can have maximum of 2 Queueable jobs. Basically, it is. Use Apex code to run flow and transaction control statements on the Salesforce platform. Apex offers multiple ways for running your Apex code asynchronously. Queueable Apex is an asynchronous context as far as limits go, which does affect a variety of limits, including the total SOQL count (200 instead of 100). enqueueJob () points to), and thus you find yourself in the "pending work, commit or roll back" situation. As these callouts are time consuming, I would like to execute them in parallel, and when they all finish continue processing with data coming from different sources. Test Queueable Used:Queueable apex provides us a means to create an asynchronous job (An asynchronous job means a piece of work, which is scheduled to run in background, for e. If there came a time where it was necessary to implement another time. Apex is superior in all three categories for maintainability, scalability, and efficiency. enqueueJob ()). System. Robert selects the Queueable Chainable option in the OmniScript. You can use this example. Among these are complex asynchronous automations including Queueable, Batch, and Schedulable Apex. 31 6 6 bronze badges. In addition, you can detect and recover from a wide variety of errors and exceptions with clarity. Stack Exchange Network. 2 Answers. Overview. The key difference can be found in the Queueable Apex documentation: Similar to future jobs, queueable jobs don’t process batches, and so the number of processed batches and the number of total batches are always zero. This book starts by taking you through common Apex mistakes,. public class Queueabletest implements Queueable { private String v1; private Integer v2; // Constructor executes now public. Great if you could help on this? Their requirement is to sync Salesforce object to external system. In future methods, we cannot pass sojects for reasons future methods being executed at a later point of time, by the time it is executed the sboject data could be stale. Recommend using Queuable Apex instead because one can provide more complex input to it and have better visibility via Apex Jobs in Setup. . Using Batch Apex, you can process records asynchronously in batches (hence the name, “Batch Apex”) to stay within platform limits. These apex is used for syncing data in two systems, handling longer jobs which will hit Salesforce Governor limits. And what if the count returned is more then 150, is there any way to abort the list of jobs in one go preventing 150 DML exception – ScoRpion. They "will be processed when system resources become available" ( Source ). Start Method - This method is called once at the beginning of a Batch Apex job and returns either a Database. Queueable Jobs can contain the member variable as SObjects or custom Apex Types. Synchronous apex methods typically use asynchronous future methods to perform API calls, or callouts in Apex. Execute Method - This method is. This article covers the best way to execute performant HTTP-related code, while allowing for further processing to be done. 0) Summer '23 (API version. The limit is typically 250,000 or the number of user licenses in your org multiplied by 200, whichever is greater. Remember this is a shared limit for all batches on your org. 1. I am new to salesforce. What is happening here appears to be your process automation. This was working on its own as expected all the unit tests were working too per my understanding of queueable class and apex tests. Using the interface is an enhanced way of running your asynchronous Apex code compared to using future methods. Interestingly, while Batchable-> Batchable isn't supported, Batchable-> Queueable-> Batchable is, so the Queueable insulates the pair of. For long-running jobs with large data volumes that need to be performed in batches, such as database maintenance jobs. Apex CPU limits are still hit. Chaining Queueables: Does the second job count against the shared limit for asynchronous Apex method executions. During a dataload the matching failed, and two sources that should have resulted in a single parent actually generated separate parent records. Transaction Finalizers. Apex classes that implement the Queueable interface that haven’t yet been executed. startTest and Test. deliver (); What you need to do is call Test. This limit is for your entire org and is shared with all asynchronous Apex: Batch Apex, Queueable Apex, scheduled Apex, and future methods. Schedulable Interface. Apex, future methods, Queueable Apex, and scheduled Apex) per a 24-hour period1,6 org multiplied by 200, whichever is greater Number of synchronous concurrent transactions for long-running transactions 10 that last longer than 5 seconds for each org. Step 3 – Click on New to select a new Apex Class. Is there a way to add data to an enqueued job? 0. While in a batch there is a limit of 100 batches; Queueable can be much faster than batch apex if used properly; This can be invoked from future method as well; Batch Advantage: Batch allows to query up to 50 million records in a start method (This is unique)I have a chained queuable apex class making an HTTP request to an external server. 1. Below is my queueable class which is working with the batch class to send a rest post request. For. My question is: Is there an advantage or difference in putting logic in the Constructor vs the Execute Method? In the following queueable class I am selecting one of the two templates and performing a callout for each of the lead records passed in from the trigger. Using Queueable Apex; Using the Finish method of Batch class. . Note: If you call the batch class from start or execute methods then Salesforce throws the below error: System. Queueable apex and future method both run sdfs asynchronously but queueable apex provides these additional benefits. Future method cannot be called from a future or batch method. It makes use of the Queueable interface in Apex, and shows how to implement the Queueable interface with the least amount of boilerplate. You can use Salesforce Batch apex or a Queuable to split the transactions into at least 4-5 transactions with 40-50 queries each. (If there are a lot of Account records being updated then moving this task to async might be a good idea). This approach can be useful in cases where the Apex Batch Job performs the same operation which is implemented in the Queueable. Usage. That way the queueable had all the data it needed from all the trigger invocations when it fired (i. This means it can handle more complex transactions and larger volumes of data. 2. Queueable Apex allows you to submit jobs for asynchronous processing similar to future methods with the following additional benefits: Non-primitive types: Your Queueable class can contain member variables of non-primitive data types, such as sObjects or custom Apex types. The ID of a queueable Apex job isn’t returned in test context—System. To ensure that this process runs within the test method, the job is submitted to the queue between the Test. 2. Batch jobs usually have the limit of five queued or active jobs simultaneously. And @future requires that the method be static. An Apex trigger processes platform event notifications sequentially in the order they’re received. ","In the test class, insert 50 Account records for BillingState "NY" and 50 Account records for BillingState "CA". You can create response in such a way that the data is affected in an expected way. To ensure that the queueable process runs within the test method, the job is submitted to the queue between the Test. Chaining jobs. That data is automatically available when the execute method is invoked some time later. For example, a developer could build an archiving solution that runs. Here are a few: Higher Limits: Queueable Apex has higher governor and heap size limits compared to synchronous Apex. What did work for me was uploading a new version of the Apex Class that commented out the calling of the child job. This table lists the asynchronous Apex features and when to use each. Description. . Queueable has some benefits over using @future, the other aysnc "immediate" execution path, but neither has the delay you are looking for. In contrast, the Limits. I am unable to replicate this issue. Queueable q1 = new MyFirstQueueable (); q1. The difference between Batchable, Queueable, and Future methods is how they're designed to behave. Too many queueable jobs added to the queue: 2. Before you can publish event messages, create platform event instances. 1 For Batch Apex, method executions include executions of the start, execute, and finish methods. For instance future, batch, schedulable and queueable methods in apex. The maximum number of asynchronous Apex method executions (batch Apex, future methods, Queueable Apex, and scheduled Apex) per a 24-hour period 1, 6 250,000 or the number of user licenses in your org multiplied by 200, whichever is greater Queueable Apex can be used to run processes that will take a long time, such as extensive database operations or external web service callouts. I don't think you can use the @future syntax on that method. enqueueJob in a single transaction.