FRAUD MONITORING SYSTEM WITH DISTRIBUTED CACHE

Systems and methods for fraud monitoring in a payment service are disclosed. An exemplary system includes a first server being located at a first locale and routing a first series of transaction requests. The system includes a second server being located at a second locale and routing a second series of transaction requests. The transactions requests may or may not be associated with a single payment service user account. The system includes a distributed cache storing a set of transaction details of the two series of transaction requests. The system includes a risk service having access to the set of transaction details from the distributed cache. The risk service generates a fraud warning based on a result of a comparison of at least one transaction detail in the set of transaction details and at least one transaction detail of a new transaction request received by the first server.