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MongoDB – How to aggregate with deeply nested arrays

I have the following MongoDB structure: Division Collection: { "_id": ObjectId("5b28cab902f28e18b863bd36"), "name": "Premier League", ... "teams": [ ObjectId("5b28cab902f28e18b863bd01"), ObjectId("5b28cab902f28e18b863bd02"), ObjectId("5b28cab902f28e18b863bd03"), ... ] ... }, ... Teams Collection: { "_id": ObjectId("5b28cab902f28e18b863bd01"), "name": "Liverpool", ... "players": [ ObjectId('5b23tmb902f28e18b863bd01'), ObjectId('5b23tmb902f28e18b863bd02'), ObjectId('5b23tmb902f28e18b863bd03'), ... ]…

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redis pipeline and pipeline

The essence of the redis pipeline is to change the read and write order of the instructions in the pipeline. We usually say that the pipeline is a means of inter-process communication, and the redis pipeline is socket-based communication, the…

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