Abstract: In an approach for optimizing clustered filesystem lock ordering in multi-gateway supported hybrid cloud environment, a processor identifies a wide area network (WAN) caching gateway topology between a set of nodes distributed in a hybrid cloud environment. A processor identifies a token request made for accessing a file targeted for WAN caching across sites within the hybrid cloud environment. A processor analyzes an importance of block ranges of the token request. A processor assigns a weight to the token request in relative comparison with weights allocated to token requests made by other applications. A processor dynamically modifies a read-ahead algorithm used during token generation to generate tokens for the block ranges of the token request based on the WAN caching gateway topology.