Salesforce Governing Limits
There are some specific governor limits in salesforce which are placed by salesforce in apex to maintain the multi-tenant architecture of salesforce.
Please find the list of all the major governor limits in salesforce :
| Description | Synchronous Limit | Asynchronous Limit |
| Total number of SOQL queries issued in Salesforce | 100 | 200 |
| Total number of records retrieved by SOQL queries in Salesforce | 50000 | 50000 |
| Total number of records retrieved by Database.getQueryLocator in Salesforce | 10000 | 10000 |
| Total number of SOSL queries issued in Salesforce | 20 | 20 |
| Total number of records retrieved by a single SOSL query in Salesforce | 2000 | 2000 |
| Total number of DML statements issued in Salesforce | 150 | 150 |
| Total number of records processed as a result of DML statements, Approval.process, or database.emptyRecycleBin in Salesforce | 10000 | 10000 |
| Total stack depth for any Apex invocation that recursively fires triggers due to insert, update, or delete statements in Salesforce | 16 | 16 |
| Total number of callouts (HTTP requests or web services calls) in a transaction in Salesforce | 100 | 100 |
| Maximum cumulative timeout for all callouts (HTTP requests or Web services calls) in a transaction in Salesforce | 120 sec | 120 sec |
| Maximum number of methods with the future annotation allowed per Apex invocation in Salesforce | 50 | 1, only in queueable methods |
| Maximum number of Apex jobs added to the queue with System.enqueueJob in Salesforce | 50 | 1 |
| Total number of sendEmail methods allowed in Salesforce | 10 | 10 |
| Total heap size in Salesforce | 6 MB | 6 MB |
| Maximum CPU time on the Salesforce servers in Salesforce | 10,000 milliseconds | 60,000 milliseconds |
| Maximum execution time for each Apex transaction in Salesforce | 10 minutes | 10 minutes |
| Maximum number of push notification method calls allowed per Apex transaction in Salesforce | 10 | 10 |
| Maximum number of push notifications that can be sent in each push notification method call in Salesforce | 2000 | 2000 |