MongoDB is a scalable, high-performance, open source, document-oriented database. It supports a large number of languages and application development platforms.
4
votes
1answer
99 views
Querying MongoDB for information on a collection of books
I have this huge chunk of code. Is there any better to write this code, or am I too paranoid that I check every MongoDB query for error?
The logic is here:
Bookcollection = collection of books
Book ...
0
votes
1answer
19 views
Flattening a 2D array to use map/reduce
I have been trying to get better at functional programming, which includes understanding map/reduce. I wrote a function intended to fill an autocomplete with values. The challenge I was encountering ...
4
votes
2answers
60 views
Get all followers and friends of a Twitter user
I'm trying to find my bug or any potential bottleneck that cause my program to be really slow. The script is to get all the followers and friends and save that in MongoDB.
...
2
votes
0answers
323 views
Python app-level document/record locking (eg. for MongoDB)
MongoDB does not provide means to lock a document (like SELECT FOR UPDATE in RDBMS).
There is a recommended approach to Isolate Sequence of Operations, which is ...
1
vote
0answers
15 views
Pulling data quickly from mongodb with node.js
I am currently struggling with a request I am making to my server that is taking more than 4 seconds!
I am using socket.io, express and mongoDB in the back end.
I cut out a lot of the cruft to ...
1
vote
1answer
150 views
Node.js Paging with Mongodb
I want to create variable paging on Node.js with MongoDB. I use MongoJS on client side create a request:
...
1
vote
0answers
52 views
Game server in Java querying MongoDB for JSON
I was hoping someone would have a look at how I retrieve the questions from the db, parse the JSON and process the results - possibly advise how I could improve efficiency by streamlining my code. I ...
8
votes
1answer
108 views
One-to-many relationship with Python objects
I have built Python objects to simulate a one-to-many relationship and then store the object in a MongoDB instance. I am using lots of composition to achieve what I want. The code works perfectly fine ...
0
votes
1answer
84 views
Multi-player game server accessing and querying MongoDB
I have a remote hosted server that's running Java VM with custom server code for a multiplayer real-time quiz game. The server deals with matchmaking, rooms, lobbies etc. I'm also using a MongoDB on ...
10
votes
2answers
618 views
NodeJS broker between MongoDB and RabbitMQ
I wrote a small program that aims to take some data from the MongoDB database and put them in the RabbitMQ queue.
I tried to use only promise style but I am a beginner in JavaScript. Could you please ...
0
votes
0answers
73 views
MongoDB repository, dynamic objects, Razor Templates
I am writing a repository for MongoDB and are looking for some review at its current state. I am looking for ways to improve it without adding complexity.
Should I be using a Singelton pattern for ...
2
votes
0answers
24 views
Modify records at one time
Do you think this works well? I.e, do I need to close the database connection at the end? The goal is to be able to upsert and delete many records in one shoot.
Here is is an example HTTP POST ...
7
votes
2answers
85 views
Recursive download articles and dump to MongoDB
This is simple code that recursively downloads articles from the public WordPress API:
...
3
votes
1answer
67 views
Realtime chat service
I am new to Node.js and Socket.io. I implemented a realtime chat service that has a chatroom feature. When the actual product is launched, there will be at least 200 concurrent users with 50 groups of ...
2
votes
1answer
91 views
NoSQL schema for weather data
I am using NodeJS and MongoDB for a weather app that takes the weather info from a logger, saves it to a database, and relays the data to the browser in real-time. It is hosted here with code here ...
0
votes
1answer
30 views
Constructing MongoDB document from a dict with character code-to-integer translation
I have an class definition:
...
4
votes
1answer
182 views
User-like MongoDB implementation
This is my first implementation of MongoDB, much much more to come. This sheds light on some things like how I've structured my collection. I hope to gain feedback and insight from the community on ...
1
vote
0answers
31 views
Structuring my application documents
I'm just starting out on an application and I've heard some good things about MongoDB so I thought I'd give it a crack in this new project to see how well it works.
Please bear in mind that prior to ...
0
votes
0answers
102 views
Secure and optimize Mongoose model component
Please help in deciding if this method for a Mongoose model component for user authentication can be made more secure and optimized, for efficiency and platform independence.
...
4
votes
1answer
57 views
Tabulating a report
I have a method for generating a report in Python. I want to organize the section about the date into a separate method so I can repeat the report for different dates.
What's the best way to ...
1
vote
3answers
60 views
Top-10 lists of occupations, ranked by various attributes
In the code below, all pairs of functions are very similar:
set function
rankListId is different
rankListName is ...
4
votes
1answer
744 views
Node.js chat client
This is a chat using Node.js, socket.io and MongoDB for storage.
I'd appreciate any feedback on what can be improved. I understand that this allows for non-unique usernames to be used, and it's ...
8
votes
2answers
2k views
0
votes
0answers
33 views
2
votes
2answers
96 views
SQL Server to MongoDB Template
Looking for feedback on a set of templates I've just created. I'm planning on converting them to Yeoman but want to make sure they're ready for prime time before doing so. They are currently in ...
3
votes
1answer
98 views
Tornado PyMongo product wishlist
I am writing a Tornado app in which a user can maintain his products wishlist. There are two collections, users and products. As ...
1
vote
0answers
18 views
Nesting models within models
I am saving data into a MongoDB. The data will be saved into 3 Mongoose models that are hierarchical. A User model contains an ...
5
votes
1answer
473 views
MongoDB inventory system
I am trying to develop a simple inventory system that takes JSON data gathered from a Powershell script, inputs the data into a MongoDB, and displays the info in an interesting manner for the user. It ...
3
votes
1answer
55 views
Probability ordering by seller's tariff
I have an instance method (update_priority); it calculates the position of an element, depending on the tariff of its seller.
If the seller is of a level3 tariff, ...
2
votes
0answers
30 views
Iterating a list to make API calls
I'm new to JavaScript and was hoping there was a cleaner way to write this. It's a block of code that looks at a group of documents in a collection (called Messages), and makes a call to the GitHub ...
0
votes
0answers
24 views
Gathering emails, phones, URIs, and tag related to a room
I've made a strange method with multiples conditionals, creating a lot of Lists and I was wondering if I could write it in a better and more legible way.
...
1
vote
0answers
158 views
Node.js log parser for mongoDB
I have developed a log parser, the goal is to take whatever log type I can, and convert them in a mongoDB collection.
I think I've done a pretty good job at reading whatever type of log are trhown at ...
0
votes
1answer
78 views
Which is a better data structure using mongodb?
I'm still confused which structure is better structure using MongoDB.
Place child in parent:
...
2
votes
0answers
274 views
Log my external IP address using NodeJS
I've been learning NodeJS recently, and have a small program to get the external IP address on my home network from fugal.net, compare it to the previous IP address, and if there is a change update ...
2
votes
0answers
108 views
NoSQL-based sequence generator
For my web application I have to generate a sequence of following format:
<year><sometext><month><sequence>
For example:
...
3
votes
1answer
772 views
Node js single mongodb connection
I want my entire node application to use one single mongodb connection, at least that's what I think is better. I wrote this little script and want some feedback on it. Especially if what I'm doing ...
3
votes
2answers
917 views
Node.js script may have memory leak
I use this node.js script to migrate MongoDB collection to a schema to another. It does work if the collection is <20k documents, but slows down to a crawl and sometime throw a
FATAL ERROR: JS ...
14
votes
1answer
165 views
Making an efficient and healthy db call for a real-time browser game
I'm doing a calculation for a real-time browser game, where users can invest some of their balances to the site. I need to update their invest's based on ...
2
votes
0answers
40 views
Parsing CSVs for bulk database insertions
I'm writing this as (eventually) part of a larger program. This will serve as the bulk data insertion from .csv files we parse.
I'm primarily looking for parts that are
breaking Go's formatting, ...
3
votes
1answer
393 views
Tornado quiz app
I am writing a simple quiz app using Tornado and MongoDB. The user authentication is done using Facebook and each user is uniquely identified by their Facebook ID. When a user first creates an ...
4
votes
1answer
1k views
Optimizing async joins for mongodb (mongoose) using async.js
I'm building a media viewer web app for a kiosk in node that uses data in mongo. To render the viewer, it gathers together all the Asset objects (representing video files), each of which belong to a ...
2
votes
1answer
41 views
6
votes
2answers
664 views
Simple telephone address book
I am new to Java programming, and to help me learn, I created a simple telephone address book. The code runs as expected, but I would be interested to here from more advanced programmers if they ...
0
votes
1answer
854 views
4
votes
2answers
831 views
Modularize this node.js express server code for routes and session handlers?
I have express node.js server code using Passport. It receives a user to authenticate it and ...
1
vote
2answers
710 views
Number of Google search results over a period of time, saved to database
I am writing a Python script that scrapes data from Google search results and stores it in a database. I couldn't find any Google API for this, so I am just sending a HTTP GET request on Google's main ...
1
vote
0answers
83 views
Basic commenting structure for commenting on objects
I would dearly love some feedback on the model below. It's a basic commenting structure where users can comment on a variety of objects in the model. I have denormalised it to make querying simpler, ...
0
votes
1answer
74 views
Class for connecting to mongodb databases and return collection object
This code connects to a mongodb database and returns collection objects. I am concerned about the exception handling, variable names and comments.
...
5
votes
1answer
226 views
E-commerce product price tracker
I building a very simple price tracker web app. I am using MongoDB with pymongo. The user will enter the URL of the product he wishes to track and the desired amount, when the price goes below this ...
2
votes
1answer
119 views
Views Counter made in Python, Gevent and MongoDB
I've created a Views Counter in Python, Gevent and MongoDB (Flask is also included in the full stack as you can see from the context issue in the code).
My gut still tells me that it can be still ...
