The tag has no wiki summary.

learn more… | top users | synonyms

0
votes
1answer
67 views

Implementation of recurring fee system

I'm developing an application which will list members who have not paid their any previous month's fee and a separate list for those who have paid the fee. So, lets say a member who will be paying fee ...
0
votes
1answer
206 views

Should I pay for the use of subversion?

I am confused about paying subversion. Our company has a solution and wants to manage the version of the source. Our company product is obviously commercial product and not open source. & it's not ...
1
vote
3answers
173 views

Payment Gateways and RESTful API

I have a RESTful API that offers eCommerce functionality. One area I'm struggling to decide on the correct implementation is how to process payments. Lets say I have the following URI GET ...
0
votes
1answer
97 views

How to verify if 3rd party payment succeeded?

A more specific version of this question was kicked off of StackOverflow so I hope this is now the right place for this question. I'm working on a payment processing website that will function like ...
36
votes
1answer
1k views

Where does paypal's 92233720368547800 number come from?

There has been a story in the news about a man whose Paypal account was accidentally credited with $92,233,720,368,547,800. Where does this number come from? What sort of programming bug is likely to ...
1
vote
2answers
183 views

PayPal proof of payment - is there a need to store it at our server?

I am developing an iPhone app, which I am integrating with PayPal. I did it successfully using PayPal library. I am testing it on sandbox mode. When I transfer money from one account to the other ...
3
votes
2answers
903 views

Handling subscriptions, balances and pricing plan changes

Preamble My aim is to create reusable code for multiple projects (and also publish it on github) to manage subscriptions. I know about stripe and recurring billing providers, but that's not what this ...
2
votes
2answers
296 views

How to overcome the fear of building a web application with a recurring payment system?

I'm a Ruby on Rails developer. I'd like to create a web application. I will let users get a payed subscription to use the product. So I will need a recurring billing system (e.g. via paypal). But ...
4
votes
4answers
603 views

Freelancing - Getting paid for the quote or estimate

It is often necessary to spend time designing a solution, breaking down the design into tasks and sub tasks and estimating the time it will take to complete each task in order to produce a reasonable ...
0
votes
2answers
200 views

Question about initial interview for job [closed]

So I feel kind of stupid having to ask this but tomorrow I have a phone interview with a good company. Phone interviews themselves not a big deal for me, but having to tell them my salary ...
7
votes
3answers
412 views

Integrating with a payment provider; Proper and robust OOP approach

History We are currently using a so called redirect model for our online payments (where you send the payer to a payment gateway, where he inputs his payment details - the gateway will then return ...
5
votes
2answers
212 views

Why payment processors rarely support account outside USA? [closed]

Researching for a payment processor/ merchant account is hard. For us, that live outside USA is very very hard. I wonder what reason exist for services like https://stripe.com/ or ...
2
votes
5answers
294 views

Is there a way for developers and their clients to make a 'safety net' for the final transaction of software for money?

First off, we presume that the projects in question are not large or important enough for the parties involved to establish a formal contract, and that the parties are not able to meet in person. So, ...
3
votes
3answers
663 views

Should I ask for advance payment on custom work? [closed]

...for project-based work. So far I didn't, and always got paid when work was complete and didn't ran into any problems. Does this make me look unprofessional? :) Should I ask like 25% - 50% advance ...
1
vote
1answer
368 views

How does a paid Saas actually work? [closed]

Could anyone explain to me how does a paid Saas work please? I know for free Saas you can just create some kind of registration and authentication process which allows the users to use all features. ...
6
votes
5answers
589 views

Best-practice to manage concurrency into a basket in a e-commerce website

What is the best practice to manage the case where two customers add in the same time a product whose the stock was only 1 ? Must there be a check in the code of the basket to avoid one of these 2 ...
0
votes
5answers
374 views

Rewarding open-source contributors

Is there a service which could help me reward (pay) the contributors of an open-source project by their contribution to the project (Maybe using data from where the code is hosted GitHub)? Maybe by ...
4
votes
1answer
362 views

PCI Compliance, FDMS and TransArmor

So, I've been tasked to work on an integration project where we will ask customers for credit card information and send it over to our integration partners, who will process the payment/cc info and ...
3
votes
2answers
250 views

Using Paypal (or similar) to log into my site?

I have a web site and I want to offer a few levels of service - one free, one for a one-off payment, and one for a subscription. My first inclination is to use Paypal for the payment options. I ...
7
votes
5answers
334 views

What do you do to make the client understand that requirements not mentioned in contract should be charged separately?

I've done a very small project for a specified amount of payment. The project was some client-side validation code. However, now client asks for code improvement (general code improvement including ...