store: postgres, ttl: 2 s
first request, key=k-6             -> HTTP 201  replayed=-    retry-after=-    {"id":1,"customer":"cus_42","amount":1999,"currency":"INR"}
immediately after, key=k-6         -> HTTP 201  replayed=true retry-after=-    {"id":1,"customer":"cus_42","amount":1999,"currency":"INR"}
after sleeping 2.5 s, key=k-6      -> HTTP 201  replayed=-    retry-after=-    {"id":2,"customer":"cus_42","amount":1999,"currency":"INR"}
payments in the table: 2