Book Image

Learn MongoDB 4.x

By : Doug Bierer
Book Image

Learn MongoDB 4.x

By: Doug Bierer

Overview of this book

When it comes to managing a high volume of unstructured and non-relational datasets, MongoDB is the defacto database management system (DBMS) for DBAs and data architects. This updated book includes the latest release and covers every feature in MongoDB 4.x, while helping you get hands-on with building a MongoDB database app. You’ll get to grips with MongoDB 4.x concepts such as indexes, database design, data modeling, authentication, and aggregation. As you progress, you’ll cover tasks such as performing routine operations when developing a dynamic database-driven website. Using examples, you’ll learn how to work with queries and regular database operations. The book will not only guide you through design and implementation, but also help you monitor operations to achieve optimal performance and secure your MongoDB database systems. You’ll also be introduced to advanced techniques such as aggregation, map-reduce, complex queries, and generating ad hoc financial reports on the fly. Later, the book shows you how to work with multiple collections as well as embedded arrays and documents, before finally exploring key topics such as replication, sharding, and security using practical examples. By the end of this book, you’ll be well-versed with MongoDB 4.x and be able to perform development and administrative tasks associated with this NoSQL database.
Table of Contents (22 chapters)
1
Section 1: Essentials
5
Section 2: Building a Database-Driven Web Application
9
Section 3: Digging Deeper
13
Section 4: Replication, Sharding, and Security in a Financial Environment
14
Working with Complex Documents Across Collections

Creating an AJAX handler web action script

The next step is to create a script that jQuery DataTables can call, and subsequently returns the requested data in JSON format. This action script (/path/to/repo/www/chapter_06/ajax.py) makes use of both the products domain service as well as the new JSON responder class discussed in the previous sections.

As with the other web scripts we've described so far, we add an initial tag that tells the web server's CGI process how to run the script. We then perform the appropriate imports:

#!/usr/bin/python
import os,sys
src_path = os.path.realpath('../../chapters/06/src')
sys.path.append(src_path)
from config.config import Config
from web.responder.json import JsonResponder
from web.auth import SimpleAuth
from db.mongodb.connection import Connection
from sweetscomplete.domain.product import ProductService
from sweetscomplete.entity.product import Product

Next, we use the new Config class to create the Connection, Product, and ProductService...