Mongodb count is slow

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August undefined, 2024

WebHere’s a query that takes forever for a podcast database. I want to know the number of podcasts that start with the letter A: Counting large collections is unfortunately slow, but … Web9 mrt. 2024 · Artificial Corner. You’re Using ChatGPT Wrong! Here’s How to Be Ahead of 99% of ChatGPT Users. Timothy Mugayi. in. Better Programming.

performance - mongodb queries are very slow - Stack Overflow

Web8 jun. 2024 · I have issues to understand why counts are so slow. I am using the C# driver with CountDocumentAsync. My collection has 1Mio+ records with around 1,5 GB of data. … Web1 dag geleden · I designed a mongoDB database and i am trying to do queries on this database using a C# script. But this is very slow compared to MongoDB Compass. … helmut hoinkis

Why sharded cluster mongodb slower than single mongodb

Web13 nov. 2024 · 众所周知, mongo db的count查询是相当慢的, 但是count的查询又是非常常见的作用. 笔者最近就有一项需要,需要在200万条数据中执行count查询,并且使用MongoTemplate.count ()查询,结果查询结果很慢. 那么如何解决这个问题呢? 笔者查询了相关的资料. 采用了以下方案供大家参考. 首先,笔者在mongo shell中执行 db.collection.find ( … Web10 sep. 2016 · -In MongoDB profiler did you check the slow running queries. -Did you try indexing the documents (use inputs from above step) -Which version of MongoDB are … WebThere are two ways one could count the items in a collection: Using the collection Count method. var count = collection.Count (new BsonDocument ()); Using the LINQ Count … helmuth musik

MongoDB Count on millions of row is very slow-mongodb

performance - MongoDB

Web15 uur geleden · Why sharded cluster mongodb slower than single mongodb Ask Question Asked today Modified today Viewed 3 times 0 I build Sharded Cluster mongodb in 3 servers and use ycsb tool to inset 1 million records to test the performance. This is the test result. Single mongodb Web20 feb. 2024 · There’s a lot of slow query message on my mongodb log, does that certainly mean my commands are slow? I have applied index and it shows IXSCAN. This is about the aggregate query (the 2nd option): The indexes are applied alright, probably not to the best possible extent. helmuth palmaWeb3 mei 2024 · As per blog of @VladMihalcea here the MongoDB aggregation framework is extremely useful and its performances can’t go unnoticed.that didn’t require any extra … helmut hofmann leupold

"Web23 dec. 2024 · It is slow because it is not using an index. For each document in the logs collection, it is doing a full collection scan on the graphs collection. From the $expr documentation page: $expr only uses indexes on the from collection for equality matches in a $match stage. Share Improve this answer Follow answered Jan 3, 2024 at 9:47 Joe … " - Mongodb count is slow

Mongodb count is slow

Why sharded cluster mongodb slower than single mongodb

Web30 jul. 2024 · MongoDB 'count ()' is very slow. How do we work around with it? MongoDB Database Big Data Analytics You can use ensureIndex () to boost the performance of … Web28 jul. 2024 · The way to optimize the recommended countDocuments query is to create a Compound Index on the query filter fields you are using: PersonId + Role. Note the order of the fields in the index definition also matters in query optimization. As you already know the countDocuments is equivalent to the following aggregation.

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Web16 aug. 2024 · LINQ is slightly slower than using the direct API, as it adds abstraction to the query. This abstraction would allow you to easily change MongoDB for another data source (MS SQL Server / Oracle / MySQL etc.) without many code changes, and this abstraction brings a slight performance hit. Web23 dec. 2024 · I have a mongodb query that works but takes too long to execute and causes my CPU to spike to 100% while it is executing. ... In my attempt to analyze why …

WebMongoDB full-text search running slow Train Heartnet 2016-08-09 09:45:29 622 1 mongodb/ indexing/ full-text-search. Question. I have a collection named meta_all … Web30 sep. 2013 · mongodb 使用中 count 的问题问题：在正常的使用的 mongodb 的过程中，有一天公司意外断电，重启机器后 mongodb find（）可以正常的查看数据，也可以正常的进行数据的搜索，但是在求整个集合的 count （）时显示为0；解决办法：执行：collection.validate (true) # 执行对集合验证操作然后再次进行 count 的求和后正常； …

Web23 jan. 2024 · count sql is very slow, using mongo 3.6, with 2.5m records · Issue #233 · doableware/djongo · GitHub. Notifications. Fork. Code. Actions. Projects. Security. Open. radzhome opened this issue on Jan 23, 2024 · 15 comments. Web13 sep. 2024 · MongoDB works best if you keep individual documents to a few kilobytes in size, treating them more like rows in a wide SQL table. Large documents will cause several performance problems. Creating...

Web20 apr. 2024 · Slow aggregate $COUNT performance, aggregation Admin_MlabsPages_mLa (Admin Mlabs Pages M Labs) April 19, 2024, 9:16pm #1 The aggregate below runs in less than 1 second without the final $count stage. But with the $count it takes 562 seconds to run (8 vcpus and 62GB RAM). The count result is …

Web30 aug. 2024 · Performing the COUNT (*) on an InnoDB table must scan the table to avoid miscounting records that are busy being inserted/deleted by other connections but not yet "committed". Actually, it is good enough to do a full scan on some index, not necessarily the whole table (which contains the PRIMARY KEY ). How much RAM do you have? helmuth olsenWeb18 mrt. 2012 · You can but it will become slower as data size increases which is a bad pattern. There are solutions mind you, they're just more complicated than that. All that … helmuth pallienWeb30 jul. 2024 · MongoDB 'count ()' is very slow. How do we work around with it? MongoDB Database Big Data Analytics You can use ensureIndex () to boost the performance of count () method in MongoDB. To understand the concept, let us create a collection with the document. The query to create a collection with a document is as … helmuth pauli tuttlingen