Webb6 juli 2024 · MongoDB 4.4 brings the possibility to shard a collection and determine zones by compound keys, including mixing a hash key with non-hashed keys. Hashed keys may be placed in the prefix of the index (shard key) or not. Depending on the method chosen, different settings must be in compliance with the balancer and this article will also show … Webb7 sep. 2016 · MongoDB Sharded cluster 的自动负载均衡目前是由 mongos 的后台线程来做的,并且每个集合同一时刻只能有一个迁移任务,负载均衡主要根据集合在各个 shard 上 chunk 的数量来决定的,相差超过一定阈值(跟 chunk 总数量相关)就会触发chunk迁移。 负载均衡默认是开启的,为了避免 chunk 迁移影响到线上业务,可以通过设置迁移执行 …
Hashed Sharding — MongoDB Manual
Webb4 apr. 2024 · MongoDB uses a config server to store metadata about the cluster, including information about the shard key and shard distribution. Replication: MongoDB provides … Webb25 juli 2024 · 如何选择Shard Key? MongoDB分片集群支持的分片策略 范围分片,支持基于Shard Key的范围查询。 哈希分片,能够将写入均衡分布到各个shard。 Tag aware sharding,您可以自定义一些chunk的分布规则。 说明 原理 sh.addShardTag () 给shard设置标签A。 sh.addTagRange () 给集合的某个chunk范围设置标签A,最终MongoDB会保证 … dfnd t shirts
MongoDB Sharding: Concepts, Examples & Tutorials - BMC Blogs
Webb13 apr. 2012 · 3 Answers. As outlined in the Sharding Administration Docs, you can use db.printShardingStatus () to see this information. For sharded collections it will print the … Webb10 apr. 2024 · Make analyzeShardKey command return shard key values correctly when the supporting index is hashed. Log In. Export. XML Word Printable JSON. Details. Type: Bug Status: Open. Webb8 juli 2024 · Refining Shard Keys in MongoDB 4.4 and Above July 8, 2024 Kimberly Wilkins A 1st Stab at Correcting Bad Shard Key Selections MongoDB is designed to scale and handle very large data sets. You can scale vertically in your replica sets by adding resources such as CPUs, RAM, and disks. churreria oviedo