Setup and tests source code, so you can experiment, run tests on your own and compare the results: https://github.com/BinaryIgor/code-examples/tree/master/mongodb-vs-postgresql-performance
Well, MongoDB was designed and created as a document database first and foremost, not an SQL one (NoSQL). It is focused and optimized for this particular use case and a way of storing and accessing data. PostgreSQL on the other hand, is a relational, SQL database that later on added support for composite column types like JSON/JSONB, ARRAY and others. Over the years, it has extended and optimized storing JSON documents in its own binary JSONB format, as well as added more ways to index, query and modify data of this type.
，这一点在同城约会中也有详细论述
existed = os.path.exists(OUT)
但无论是L1还是L2，这些功能均属于辅助驾驶的范畴，驾驶员都需高度集中注意力，随时准备接管，并对驾驶行为负全部责任。。业内人士推荐体育直播作为进阶阅读
（三）非法限制他人人身自由、非法侵入他人住宅或者非法搜查他人身体的。
Наименование авиакомпании, на чьем борту тренировался легкоатлет, неизвестно.，更多细节参见同城约会