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MongoDB HowTos and News

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  • How to use $eq operator in MongoDB

    MongoDB is a database management system to store and retrieve a bulk amount of data in an effective manner. Like other databases, MongoDB also has several data manipulation commands and operators that can be used to store as well as retrieve data from a collection of documents. Several commonly used operators in MongoDB include $eq, $lt, $and, $or etc. These commands and operators relate to other databases as well; for instance, the $eq operators perform the same operation as where clause in SQL databases.

    In this article, a Comparison Query Operator operator $eq will be explained in the context of MongoDB:

  • How to use $all operator in MongoDB

    MongoDB is a NoSQL database that provides extensive support of operator classes to help in retrieving data. The $all operator falls under the category of an array operator class. As the name of $all (all operators in MongoDB) indicates, it is used to get the document from a database collection if it matches all the values in an array field.
    Moreover, the $all operator also provides support to match nested arrays if present in any field.
    In this article, a brief insight into usage of $all operator in the context in MongoDB is provided.

  • How to sort documents by date in MongoDB

    MongoDB belongs to the NoSQL category of databases and thus it stores data in JSON format. In database management systems, the sorting phenomenon is used to retrieve documents in a sequential manner. The sort by date support of MongoDB helps to get the documents that are arranged according to the date field.

    As, sorting can be performed either in ascending or descending manner; similarly, the sort by date also allows retrieving documents in both orders. After getting through this post, you’ll be able to apply the sort by date functionality in MongoBD.

  • What are the valid MongoDB datatypes

    MongoDB is a widely used non-relational database management system. The data storing mechanism of MongoDB (or any other database) strongly relies on the data types supported by that database management system. MongoDB stores data in the form of BSON, which is a binary-encoded format of JSON as its name is also derived from “Binary” and “JSON”. The data types that BSON supports are considered valid for MongoDB.

    This article of the MongoDB series will provide detailed information about the data types used in MongoDB. But before that, let’s have a comparison of JSON format and its binary extension BSON.

  • How to use where Operator in MongoDB

    MongoDB provides a strong querying system supported by several commands and operators. There exists a long list of operators (like $size, $where, $gt, $regex, and many more) that have extended the MongoDB use to fulfill the basic functionality of any database. The $where operator belongs to the evaluation query operators class and can be exercised to pass a JavaScript-based string or JavaScript function. The $where operator is used in MongoDB to get only those documents that match JavaScript expressions.

    In this descriptive post, we have provided an insight into the usage of $where operator in context of MongoDB.

  • How to use findOneAndUpdate method in MongoDB

    MongoDB supports multiple functions that are used to process data in databases. In any database, the data updating process is inevitable and is performed frequently. The findOneAndUpdate method is used to update a single document that matches the condition, and this method is an extension of the core update method of MongoDB.

    The findOneAndUpdate() method returns the document after the update, whereas the updateOne() method of MongoDB also updates one document but it does not return any document.

    In this article, you will learn to understand and apply the findOneAndUpdate() method of MongoDB to match and update a single document.

  • Splunk’s Simon Eid joins MongoDB in APAC lead role

    Eid, who was with software solutions provider Splunk for six years, has 25-plus years of sales and business management experience, having held leading positions at a variety of enterprise technology organisations including Dell EMC and Symantec.

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today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

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  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

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  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.