.. Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. .. include:: ../../common.defs .. _developer-architecture: Cache Architecture ****************** The original architectural documents for Traffic Server were lost in the transition to an open source project. The documents in this section are provisional and were written based on the existing code. The purpose is to have a high level description of aspects of Traffic Server to better inform ongoing work. In the final section on "hacking" we try to document our approaches to understanding and modifying the source. .. toctree:: :maxdepth: 2 architecture.en cache-initialization.en core-cache-functions.en data-structures.en api-functions.en consistency.en ram-cache.en cache-tool.en tiered-storage.en