> March, 2010 - Vinova - Page 3

Giving it away for free isn’t a Business Model

If you give your product or service away to would-be customers, you set a dangerous precedent that you’re willing to give it away forever.  As I’ve said before: if a customer isn’t paying for your product in some way, shape, or form, you’re not running a business. Getting a customer to use your product for free only proves a customer’s willingness to pay nothing.  True value is established when a customer forks over a dollar (or lots of them) for your product. How could Netscape invent one of the most popular and widely adopted software applications in history and at the same time never make any real money at it? Simple – they established the price at “zero.”   Getting customers to go from “free” to “paid” is extremely difficult to do.  Companies establish the value of their product mostly from the price they set for their product.  Does a Bentley Continental GT really cost $160,000 to build?  No, but if Bentley sold the Continental for $20,000 there’s no way they would be able to change the price to $160,000 and hold the same amount of value in consumers’ eyes. Going from “free” to “paid” works the same way. Giving a product away for free is an easy way to confuse the concept of “people really like it” with “people really like it and they are willing to pay me for it.”  People should pay for products that have value and creating a business that ignores this is digging your own grave.  Give them a taste, maybe, but if they want the whole entrée (and if you want to stay...

Rails 3.0 Upgrade Handbook

Guys, Rails 3.0 is now at the stage of beta release. Why not consider update your self with state-of-the-art technology? Below is the handbook that we think it will be very useful to you! Let’s check it out !! Inside you’ll find: Almost 120 pages of upgrade information A step-by-step guide to upgrading your app to Rails 3 High-level discussion of what’s new in Rails 3 Practical tips on using Rails 3’s new features to improve your code Real case studies of upgrading apps and plugins Detailed checklists for upgrading via:...

Integrate Singapore eNETS payment gateway and Ruby on Rails.

There are always needs to build E-commerce sites with Credit Card transactions securely and seamlessly. In Singapore market, eNETs is the most well-known company providing payment gateway services. Up to now, eNETS only provide API for .NET and Java platform. In this post, I will show you my solution to integrate eNETS and Ruby on Rails via Java. Steps: 1. Build JAR file to submit payment info to eNETS, i named it enets.jar. This jar file will return output from eNETS to console in text format. I attached sample program built with NetBean, you can download it here: eNETS. After downloading, you just copy that folder to your NetBean projects folder as shown in below image. 2. Follow eNETS guideline, change setting for java security as well as generate merchant.priv.pgp.asc, merchant.pub.pgp.asc. 3. Change config: log4j.properties, NETSConfig.xml 4. Build enets.jar file from source files in NetBean. Right click on project root, Clean and Build. 5. Generate command to execute enets.jar, something like this: “java -jar #{RAILS_ROOT}/vendor/extensions/payment_gateway/lib/enets/eNETS.jar #{mid} #{tid} #{paymentMode} #{amt} #{currency} #{merRef} #{submitMode} #{merCertId} #{pan} #{expiry} #{stan} #{paymentType} #{successURL} #{successURLParams} #{failureURL} #{failureURLParams} #{notify_url} #{notify_url_params} #{name} #{cvv} #{post_url} #{post_url_params} #{cancel_url} #{cancel_url_params} #{bill_first_name} #{bill_last_name} #{bill_initial} #{bill_addr1} #{bill_addr2} #{bill_coy_name} #{bill_city} #{bill_state} #{bill_zip_code} #{bill_country} #{bill_mobile_num} #{bill_phone_num} #{bill_fax_num} #{bill_email} #{ship_first_name} #{ship_last_name} #{ship_initial} #{ship_addr1} #{ship_addr2} #{ship_coy_name} #{ship_city} #{ship_state} #{ship_zip_code} #{ship_country} #{ship_mobile_num} #{ship_phone_num} #{ship_fax_num} #{ship_email} #{shopper_ip_addr} #{product_format} #{product_details} #{gw_url}” 6. Run enets.jar from ruby console with output = %x[#{command}]. %x[] command will store output to output variable for later processing. It is not the same as system() or exec() ruby command. Read more on Jay Fields’ blog:  Ruby Kernel system, exec and %x 7. Parse results returned...

Benefits of NoSQL DBs

Some benefits compare to RDBMS (MySQL, Postgres, Oracle …) I come up with after few months using MongoDB and Neo4J.* No model caching thanks to high performance * No join thanks to embedded docs or graph DB * Data-to-object matching is dead simple thanks to no-join and document-oriented * No SQL injection attack * No DB migration thanks to schemaless * Scale horizontally * Social computation made easy with graph DB * No DB roll-up thanks to high volume and cap-collection Q: How do I do data query & tabulation without SQL? A: I do data query via MongoDB indexing & JSON query syntax and do data tabulation via...
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