![]() Understanding how, and how much, your cluster is being used will help you optimize MongoDB’s performance and avoid overloading your database. To get a high-level view of your cluster’s activity levels, the most important metrics to monitor are the number of clients making read and write requests to MongoDB, and the number of operations they are generating. The majority of the metrics presented in the other sections are typically used to investigate problems. Throughput metrics are crucial and most of your alerts should be set on these metrics in order to avoid any performance issue, resource saturation, or errors. For details on metrics collection using any of these methods, see Part 2 of this series. This article references metric types terminology introduced in our Monitoring 101 series, which provides a framework for metric collection and alerting.Īll these metrics are accessible using a variety of tools, including MongoDB’s utilities, commands (indicated in this article for each metric presented), or dedicated monitoring tools. ![]() If that’s your case, here is the companion article you should read. However, many companies still run earlier versions of MongoDB which use the MMAPv1 storage engine. All the metric names correspond to the one available in MongoDB 3.2. In this article, we focus on the metrics available in MongoDB when using WiredTiger, which was introduced with MongoDB 3.0 and is now the default storage engine. Here are the key areas you will want to track and analyze metrics. Key MongoDB performance metrics to monitorīy properly monitoring MongoDB you can quickly spot slowdowns, hiccups, or pressing resource limitations, and know which actions to take to correct these issues before there are user-facing consequences. It is used by companies such as Facebook, eBay, Foursquare, Squarespace, Expedia, and Electronic Arts. MongoDB ensures high availability thanks to its replication mechanisms, horizontal scalability allowed by sharding, and is currently the most widely adopted document store. Fields inside MongoDB documents can be indexed. The lightweight binary format adds speed to the flexibility of the JSON format, along with more data types. MongoDB is cross-platform and represents its documents in a binary-encoded JSON format called BSON (Binary JSON). MongoDB is a document-oriented database, as are CouchDB and Amazon DynamoDB. Document-oriented databases which store data as documents thus offering a more flexible structure than other databases: fields can store arrays, or two records can have different fields for example.Graph databases, like Neo4j or Titan, which use graph structures to store networks of data.Wide column stores such as Cassandra used to quickly aggregate large datasets, and for which columns can vary from one row to another.Key-value stores like Redis where each item is stored and retrieved with its name (key).There are different types of NoSQL databases: If you are using the MMAPv1 storage engine, visit the companion article “ Monitoring MongoDB performance metrics (MMAP)”. Part 2 explains the different ways to collect MongoDB metrics, and Part 3 details how to monitor its performance with Datadog. As far I understand, wired methods always gets invoked the time the component is being created.Īura Component Code (Parent Component) : Īura JS Controller: doInit : function(component, event, helper) )Ĭonsole.log(this.chosenDt) //this is coming properly as today's date on loadĬonsole.This post is part 1 of a 3-part series about monitoring MongoDB performance with the WiredTiger storage engine. I'm not able to understand why it does not give all records related to today's date on the 1st very time. today) it does give the records properly. Now on changing the date (changing date to 5th Jan and then coming back to 4th Jan i.e. Related to the date all events are shown through the child LWC.įirst time, the date is coming correct but no records are coming up as no call is being made to the apex method. This web component is inside a parent Lightning Aura Component which has a date picker where today's date is defaulted on initialization. I've a problem on a wired apex method not getting called from a Lightning Web Component on load.
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