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I am a freelance software engineer, I have worked in few areas of computer science, I have made some e-commerce websites in the past. Now I have an opportunity to build a big enterprise level system. I can not disclose specifics about the application due to NDA I signed so pardon me if my question seems broad, let me know in the comments if you require clarification. I appreciate your help.
About Application:
In this application, I would require building a system like uber, there will be people at my client's end for
resolving customer issues, so a CRM is also needed.
customers will be using this app, so I have
to design a separate system that can manage tickets and access
database.
My question is where to start designing such application. I guess I would require DynamoDB and AWS, I have divided modules into parts such as Client App, Database, Dashboard etc. I want to know if there is some case study that can help me decide how to design such large application.
I found this link useful, it gave me an idea of work, but still, I believe it's a long way from money shot.
[EDIT]
To narrow down the scope of the question, What Backend server should be chosen for an application that will serve one hundred thousand users per hour. I will use Mongo DB as the database, and Python as backend scripting language.
IBM has a nice article on Enterprise Architecture,
https://www.ibm.com/developerworks/rational/library/enterprise-architecture-maximum-value/
Before building the software, design how it should work and choose your software components according to that.
Previously you might need costly infrastructure to think something, with recent technologies, you can do them at a lower cost. You need to apply the right architecture and engineering when designing your application.
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I'd like to choose a framework for building and deploying AWS services and I need to have a full list of pros/cons to justify one framework over the other. Since this forum doesn't want people to just post opinions please provide references with your responses. Also, I'd like to hear from people who have deployed production solutions using any of these frameworks.
If you are looking at building Serverless applications I would select the Serverless Framework. For a couple very large reasons:
The community is a lot bigger. This may not seem like a big deal but with the community contributions constantly improving the framework itself as well as the huge quantity of community plugins to the core framework that extends the functionality out to an enormous amount, it makes it difficult to justify anything else.
Documentation quality is amazing. The Serverless Framework has a huge depth of documentation, everything from reference docs for every feature of the framework to full (and free) courses about building Serverless applications and blog posts with details on best practices. Then there is the examples repos, guides, tutorials ... its pretty awesome!
The ability to use and mix multiple cloud vendors. SAM is AWS exclusive,so if you wanted to potentially create services in other cloud vendors such as Azure or GCP, you would be stuck. But its not just the big boys either; Twilio, IBM Cloud, Cloudflare, Tencent, OpenWhisk and more are all supported.
Free monitoring and management platform. The team at Serverless Inc also produce a pretty stellar SaaS platform at dashboard.serverless.com that provides a lot of the "missing" capabilities needed for application development such as monitoring, debugging, troubleshooting, CI/CD and a bunch more!
Components makes deploying specific use cases a piece of cake. Components is one of the newest projects to come out of Serverless, Inc and promises a shift in how we build Serverless applications that is far more use case driven but also focusses a lot more on the developer experience. Something to definitely keep your eye on.
So yes, I would suggest the Serverless Framework for a lot of really compelling reasons!
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I am thinking of using either one of them in building our startup which is like a job portal with validation,verification and includes special features for freelancing and all.
Is meteor or sails good for using as a backend or should we go with more robust backend like Django? Will using javascript on our backend provide the ability to scale in the future moreso than Django/python?
I would really like some opinions in this matter to get to a decision.
sails.js and meteor are both great options for production.
Both frameworks have good real-time (socket.io) support, large/active communities, support a stateless backend design which make horizontal scalability possible, and are great for getting a web application spun up quickly.
sails.js - http://sailsjs.org
broad database support through the Waterline ORM (there are over a dozen supported databases)
concepts should more familiar to most node.js developers (it's built on express)
modeled after rails, grails, and django, so the paradigm is more familiar to developers with experience in those tools
extensible through npm package manager via express middleware and custom modules
meteor - https://www.meteor.com
better integration between the backend and frontend
project is VC-backed with a firmer corporate backing
extensible using custom package manager and extension system
built-in deployment system and hosting on meteor.com
Will using javascript on our backend provide the ability to scale in the future moreso than Django/python?
Probably. As with anything, you just have to do it right.
My overall opinion is that meteor is sort of cult-ish and monolithic, and that once you've chosen it, you're locked in. sails.js is built on express, so it's easy to split out functionality and integrate with other tools.
My disclaimer is that I work for Balderdash (the company that invented sails.js); but on that note, I can also tell you that millions of users are served by sails.js applications. We find that it's quite good, and our business is thriving because of the power of sails.js. I know folks who have used meteor with success as well.
I think this is a primarily opinion-based question, so you're going to receive answers from the very same "type".
But I can tell you one thing: Meteor is robust enough for production use, specially now that they hit the 1.1 release (https://www.meteor.com/blog/2015/03/31/meteor-11-microsoft-windows-mongodb-30).
Meteor is perfectly suited for startups, since it brings everything you need (and more) into a single "pack".
Check this: http://meteorpedia.com/read/Why_Meteor
So yah, that's my answer going for the Meteor side.. (not very technical, I know).
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Are there any cloud based private Twitter-like services out there?
I am working for a client who needs a service like this implemented, but we don't have the time or budget to create one from scratch.
I am looking for something with a REST api where I can create an account on it from the master server, set an account to follow another account, post updates for accounts, and then get a feed of posts (sorted by date) from accounts that another account is following (like a facebook wall, or twitter feed). It would be great if it could automatically scale out to hundreds of thousands of users, with perhaps 50 000 daily posts being made.
I had thought about implementing this myself, but it seems like there are some tricky areas when it comes to having an account following a few thousand other accounts, or being followed by 10s of thousands of accounts, and generating the feed in somewhat realtime as posts come in.
I have found some services such as http://www.ning.com/ and http://www.socialengine.com/ but I'm not sure if they can do what I need, and they seem to be very focussed on having a website. This is for a mobile app so that is not required.
There are a few open source projects out there, but they would all require setting up/maintaining hosting (not a huge problem) and I'm not certain how scalable they are (the client requires it scale up to at least 100k users).
I'm sorry for the late reply. I hope it will be useful to others looking at this.
I had pretty much the exact same need as you, and ended up creating a full-featured solution after finding no other resources. The service is called Collabinate (http://www.collabinate.com). It provides a RESTful API that focuses on simplicity and ease of use, and currently leaves the UI completely up to you. It uses a graph database and algorithms in the backend, and scales quite well for your situation.
Maybe private team inbox can fit in your solution too...
https://www.flowdock.com/
there is not a following feature in this but if this is an internal company need...
you can create chat rooms for departments and in general ... maybe the chat rooms can be the following feature for you
Looks like there isn't a good solution here.
I have found jaiku which looks incredibly complex and doesn't seem to run on the latest app engine sdk.
There is also diaspora which could be modified and run on your own server to do what is needed.
In the end, I have decided to just implement this myself on Google App Engine. It seems the best way to do what is needed. Using the fan-out pattern seems to be the best way. The Fantasm library seems to provide an easy to use way to do this, so I am going to try that.
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In their security statement you can read:
Salesforce.com utilizes some of the most advanced technology for Internet security available today.
When you read the rest of the article nothing really shows that this claim. Use of SSL is very common how is this “most advanced”? What proves that their server follows best security practice as this story reveals even a specialized security company doesn't follow them?
So how do you get insurance that their code is really robust? What tools? If you use these tools to fake attacks they may retaliate for example so it's not very practical.
This is not targeted especially at salesforce this is more general question about SAAS or PAAS. If you use such services to integrate with your site, how can you ensure that the security is handled correctly knowing that you cannot trust only claim ? This is a big question you need to answer Corporate Management when you choose such solution. How can you answer if they want proofs ?
This is a great question. How can we trust any Saas claims, let alone their security ones? I think it comes down to trust and marketing. In the end, since the software is not hosted in our servers, we don't know for sure if they really are secure. We can't force guys like SalesForce to make guarantees either. I would love to see a third party website that reviews all these SaaS applications, and report on their downtime, security, issues, etc.
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I can't find much information around the web about it. Has anyone used both eConnect and the Dynamics web services to interact (read/write) with Great Plains. I am looking for the pros and cons of both approaches.
This product will be installed and configured on various sites, so ease of configuration is really important. I usually hate to mess with IIS.
Should be able to target GP 9 and 10.
Thank you
Use the Great Plains Connector - full info here http://help.boomi.com/display/BOD/Great+Plains+Connector?showChildren=false
and here for pro-cons/limitations etc.:
http://www.articlesbase.com/software-articles/great-plains-customization-how-to-integrate-legacy-application-with-dynamics-gp-452580.html
and of course from the horse's mouth:
http://msdn.microsoft.com/en-us/library/ms994230.aspx
We have done sites based off of web services for GP 9. Don't worry about IIS, there isn't much you have to worry about with that. The install process is very easy. It did not require me to do any configuration with IIS. Some of the configuration is a little tricky at first, like adding users, and setting up policies. But once you get the hang of it, its no problem. We use web services for almost everything now, they were so easy to develop with. I wish there were a few more, to update and access more information which I hope is coming but otherwise easy.
We have used it on ecommerce sites and windows applications. We did not choose econnect because of the ease of the web services, econnect I beleive has more options and we did use it to create and update sales invoices, but changed it to web services. If you have any specific questions please feel free to let me know. Thanks!