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// Copyright 2024 New Vector Ltd.
// Copyright 2022 The Matrix.org Foundation C.I.C.
//
// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
// Please see LICENSE files in the repository root for full details.
package caching
import (
"github.com/element-hq/dendrite/roomserver/types"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/gomatrixserverlib/fclient"
)
// Caches contains a set of references to caches. They may be
// different implementations as long as they satisfy the Cache
// interface.
type Caches struct {
RoomVersions Cache[string, gomatrixserverlib.RoomVersion] // room ID -> room version
ServerKeys Cache[string, gomatrixserverlib.PublicKeyLookupResult] // server name -> server keys
RoomServerRoomNIDs Cache[string, types.RoomNID] // room ID -> room NID
RoomServerRoomIDs Cache[types.RoomNID, string] // room NID -> room ID
RoomServerEvents Cache[int64, *types.HeaderedEvent] // event NID -> event
RoomServerStateKeys Cache[types.EventStateKeyNID, string] // eventStateKey NID -> event state key
RoomServerStateKeyNIDs Cache[string, types.EventStateKeyNID] // event state key -> eventStateKey NID
RoomServerEventTypeNIDs Cache[string, types.EventTypeNID] // eventType -> eventType NID
RoomServerEventTypes Cache[types.EventTypeNID, string] // eventType NID -> eventType
FederationPDUs Cache[int64, *types.HeaderedEvent] // queue NID -> PDU
FederationEDUs Cache[int64, *gomatrixserverlib.EDU] // queue NID -> EDU
RoomHierarchies Cache[string, fclient.RoomHierarchyResponse] // room ID -> space response
LazyLoading Cache[lazyLoadingCacheKey, string] // composite key -> event ID
}
// Cache is the interface that an implementation must satisfy.
type Cache[K keyable, T any] interface {
Get(key K) (value T, ok bool)
Set(key K, value T)
Unset(key K)
}
type keyable interface {
// from https://github.com/dgraph-io/ristretto/blob/8e850b710d6df0383c375ec6a7beae4ce48fc8d5/z/z.go#L34
~uint64 | ~string | []byte | byte | ~int | ~int32 | ~uint32 | ~int64 | lazyLoadingCacheKey
}
type costable interface {
CacheCost() int
}
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