title: How to handle Token expiration and regeneration during load test in JMeter
body: <p>There is an LoginAPI which will generate a bearer token and same token is used as part of header in subsequent apis(API-1, API-2, API-3).</p>
  <p>LoginAPI is called under SetupThreadGroup, which will write the tokens to file
  OtherAPIs(API-1,API-2,API-3 are called in a seperate thread group which will read tokens and use it in API's)
  Currently, token expiration time is 30 minutes.
  If we execute load test for 1 hour then post 30 minutes test, all the request gets failed with authentication issue(As tokens have expired)</p>
  <p>Can any one suggest a solution to handle re-generation of tokens when expired and re-use the same in load test.
  This way, i can run test for a longer duration.</p>