btree_multiset ，（ ） Apache B+tree 内部结点不保存数据，只有叶子结点保存数据。 https://github.com/begeekmyfriend/bplustree，（MIT），实现了落 盘 BST O(log(n)) O(n) c++ stl 模板© XXX Page 4 of 24 skip list O(log(n)) O(n) level db，https://github

Licensed 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 apache.org/licenses/LICENSE-2.0© XXX Page 3 of 15 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ syntax="proto2"; package curvefs.mds; option cc_generic_services