Application

This is where UserCache stores its in-memory cache.

This is the datatype that gets stored in UserCacheStorage. Vapor’s Services API uses this.

Storage key used by Vapor’s Services API. Used by UserCache to access its cache data.

A simple mutex lock provided by Vapor’s Services API.. All code blocks that are protected with this lock’s withLock() method are serialized against each other.

After boot but before handling requests, this code runs to fill the cache with data on all known Users. LifecycleHandler is another part of Vapor’s Services API. Load all users into cache at startup.

This is where we store active WebSockets.

This is the datatype that gets stored in UserCacheStorage. Vapor’s Services API uses this. Making this a class instead of a struct. This prevents internal modifications (e.g. adding/removing a value from the dicts) from causing the entire app.storage getting copied, in the case where app.storage is a value type composed of other value types. The custom setter for app.storage is not thread-safe. So, this is a workaround for app.storage having a non-thread-safe setter.

Storage key used by Vapor’s Services API. Used by UserCache to access its cache data.

A simple mutex lock provided by Vapor’s Services API.. All code blocks that are protected with this lock’s withLock() method are serialized against each other.