The application discloses a layered decoupling deterministic idempotent identification generation method and
system. The method physically separates the session access stage and the service identification generation stage: the session access stage generates a session access
certificate based on non-service attributes to prevent replay attacks; the service identification generation
stage only constructs a service
unique key based on service parameters and generates an idempotent
handle through a
deterministic algorithm; a minute boundary double window atomic query and TTL guarantee threshold checking mechanism are adopted to provide a
clock drift tolerance of ±30 seconds; and offline
verification capability is realized through reverse
verification of the
server. The application eliminates the long-term bidirectional mapping index of the service key to the identification, and the storage overhead can be reduced by more than 70%, the generation
delay can be optimized to less than 1ms, and 100,000 + high-
concurrency scenarios per second are supported; 100% cross-node consistency, zero-
downtime configuration hot update, financial-grade security salt value rotation and cross-
system offline
verification capability are provided, and the application can be widely applied to distributed
payment, e-commerce transaction and other scenarios.