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Non-durable gateway deduplication persistence

Component: Gateway
NuGet Package: NServiceBus.Gateway (3.2)
Target Version: NServiceBus 7.x
All information stored is discarded when the process ends. This can result in more-than-once message delivery.

The non-durable gateway deduplication persistence uses a least-recently-used (LRU) cache. By default this cache can contain up to 10,000 items. The maximum size can be changed using the following API:

var gatewayStorageConfiguration = new InMemoryDeduplicationConfiguration
{
    CacheSize = 50000
};

endpointConfiguration.Gateway(gatewayStorageConfiguration);