Database replication is a service for shipping changes to your database, off to a copy housed on another server, potentially even in another data center. Each change to the records of information in your database or groups of them are organized into transactions.  These each get unique identifiers or change numbers.  Those groupings of changes are logged to transaction logs which are then moved across to the sibling database server, and applied there.

MySQL Replication is a feature of the MySQL server that allows you to replicate data from one MySQL database server (called the master) to one or more MySQL database servers (slaves). MySQL Replication has been supported in MySQL for a very long time and is an extremely flexible and powerful technology. Depending on the configuration, you can replicate all databases, selected databases, or even selected tables within a database. MySQL replication is powerful, and quite fast.  With the right caution, and correct tools, it can be as robust and reliable as Oracle’s own standby database technology.

Many IT companies equipped with young technocrats with newer ideas are considering MySQL for the global clients. Prensil Technologies is a name to reckon with in MySQL database administration. Based in India, the company houses a talent pool of highly skilled DBA as well as creative professionals to undertake any project for offshore product development. Through proper coordination with clients, the desired products can be developed and can be made compatible for any market in the world.

There are many reasons why PHP software developers consider using frameworks to be more effective but the main one is the speed of development. Frameworks save PHP application development time, help PHP web developers in creating stable applications and reduce the amount of repeated code. And that’s the most important in modern web application development and creating complicated dynamic sites and business applications.

Yii framework is a new free open-source for rapid PHP application development framework written in PHP5 that promotes clean, DRY design and encourages rapid development. It works to streamline your application development and helps to ensure an extremely efficient, extensible, and maintainable end product. It is completely object-oriented, with good documentation and large community. PHP software developers use Yii framework for creating highly productive and up-to-date Web 2.0 applications. Those PHP Developers, who are acquainted with Prado framework, have no problems in understanding this framework.  According to the results of framework productivity, Yii Framework is the fastest of all popular PHP frameworks.

Being extremely performance optimized, Yii is a perfect choice for any sized project. However, it has been built with sophisticated, enterprise applications in mind. You have full control over the configuration from head-to-toe (presentation-to-persistence) to conform to your enterprise development guidelines. It comes packaged with tools to help test and debug your application, and has clear and comprehensive documentation.

Below are the basic but extensive features provided by the Yii Open Source MVC Framework,

• Model View Controller (MVC) design pattern
• Database Access Objects (DOA)
• Form input and validation
• AJAX enabled widgets
• Authentication and Authorization
• Skinning and Themes
• Error handling and logging
• Security
• Unit and functionality testing
• Automatic code generation
• Compliant with third party code
• Detailed documentation
• Extension library

Every PHP development company is now offering web development solutions based on Yii framework.

The market for outsourcing software solutions or IT development is growing in leaps and bounds. The industry is continuously moving ahead due to its capacity of creating new software solutions on which other organizations and companies depend for business. This capability of offering instant solutions can often be seen as the premium factor behind innovation for many companies. Ideas are created, planned, comprehend and presented in a short while and they can be even developed further if required. Technology is moving very fast and making the competition steep for all players.

The IT industry shows a sign of continuous growth in market. Today the market is enriched with countless IT professionals who have specialized in different areas and are now contributing in developing software solutions. Today if your business requires any specialized service, you can easily get it from the professionals. This industry was never so helpful. But with growing demand and competition in the market, every company is outsourcing its work. The IT firms are hiring more and more specialized people and enriching their team. Therefore, as the trend suggest if anyone wishes to pursue software development, it is better to take up specializations in order to grow in the market.

Even the companies who are spending on outsourced work are investing a lot. Hence, they always look for high quality products that can work properly in as per the company’s expectation. They are hiring IT professionals to get easy solution to complicated process and always search for specialized people who work as per the demand of their business. In other words, they look for value for money services.

Today with the continuous growth in the technical industry, such as the development of smartphones, note pads, tablets have provoked the demand of software like never before. Hence, the companies prefer outsourcing the work to get best solution in least amount of time.

Reasons to go for Custom Web Application Development:

• Custom intensive

  Web application development can be customized to suit your requirements. Especially expert developers can work their magic with such applications and offer unique solutions for your particular requirement. This takes away the limitations of assembly line solutions and ensures you can optimize their use.

• Immensely scalable

  Your business will evolve. A particular business process might remain the same, but as your business progresses; its scope will become bigger. The scalable nature of web based software applications means; you can modify them to meet the growing demands of your business. And all this, without any bother at all.

• Reliability personified

  Your business needs applications that are as reliable as your products and services, if not more.The stability of web applications is also one of their salient features. Your application won’t give up on you, just when you wanted it most. More importantly, such applications have been known to outperform traditional non web based applications in terms of stability and reliability.

• High performance platform

  Web Application Development offers you a platform that fuels the performance of your
  business. By streamlining your business performance and making it more customer-oriented,you are better positioned to take important decisions. Also, the decision taking is much faster, as you can have better control over your business processes and its management.

• Easy Learning

  There are many new innovative applications available in the world of cloud computing. If you worry about training staff to use these them, application development is a smart alternative.Applications can be designed to mimic common application templates. As a result, you can build software that is unique to your company, but that is also familiar to your staff. Additional training demands are minimized. You should get in touch with a good Software Development Company for this purpose.

At the end of the day, it is important that you make an informed decision regarding the use of web based applications. There is no doubt that they are good for you, but the question is how do you optimize their use?

This can only be done if you can prioritize your goals and objectives and get an application developed that is perfectly in line with those objectives.

Even with solutions in place, acknowledging the importance of web application development can’t be overlooked. As the momentum of business increases, so do the applications required
of business. Since needs are constantly changing, developers must be ready to create applications that satisfy not only current demands, but foresee potential future conditions.

Staying current and incorporating new methodologies can sometimes determine a company’s longevity. This will necessitate key players predicting what will change, and how the application can be developed to facilitate the change. Custom Application development is essential to the ever-growing and ever-changing marketplace. You should avail Web Application Development services in order to give your company a boost.

You can find number of ready to use applications developed in PHP. The most commonly used content management systems are Joomla and Drupal, which are used to develop business websites.There are ready to use shopping carts like OScommerce, Zen Cart and Magento developed in PHP which are available free of cost over the internet. If you want to develop big web portal in PHP,Zend Framework Development can be used for that.

Why PHP?

• Speed

  Not only the speed of execution, which is important, but also that it does not slow down the rest of the machine. So it should not demand a lot of system resources.

• Stability

  Its no good being fast if the system crashes every few thousand pages. No application is bug free, but having a community of PHP Developers and users makes it much harder for bugs to survive for long. Under the hood, PHP uses its own resource management system, and has a sophisticated method for handling variables, making it intrinsically a robust system.

• Security

  The system should be protected from malicious attacks from users, both as programmers and as surfers. PHP provides many levels of security which can be set in the .ini file to the desired level.

• Simplicity

  Programmers should be able to start being productive as soon as possible.With PHP, even HTML coders can start integrating PHP into their pages straight away.Programmers with previous experience of C, or even with Javascript can get up to speed very quickly.

• Compatible With Number of Databases:

  As it is a full fledged programming language, even complex applications can be written in it. It is different as compared to HTML, where presentation is given the primary importance. PHP is compatible with MySQL, which is a source language and it can also work with enterprise databases like IBM DB2, Oracle OCI8, MSSQL, etc.

• Cuts Down Your Server Bills:

  Though PHP can run on your windows based server, it is basically designed for platforms like Linux and Apache that have zero upfront costs and no ongoing costs. As compared to Windows servers, you can save your maintenance bills.

• Free of Cost:

  You don’t have to pay to anyone. Just download PHP absolutely free and even distribute it freely.

• Hassle Free:

  Not too many codes are required for building applications with PHP. Besides, this application is safe and secure to use.

Apart from these features, PHP also offers more advantages to the users like:

• Liberty of choosing language
• Comparatively lower cost and fast turnaround time
• Can be embedded in HTML as well
• Free from restrictive authorizations
• Easy to learn
• Constantly updated
• Offers a ready made framework

The major benefits of PHP are listed above. We hope that this write up helps you in drawing a clearer picture of what PHP is all about and benefits that it offers.Contact a Web Development Company, if you want any project to be developed in PHP.

Requirements are essential part of Software Product Development, and success of a product largely depends on requirements. Requirements-related issues are often named among highest risks of software product development.

The main risks with the requirements are typically connected to missing some requirements,defective or dubious requirements, or requirements that conflict with one another. Working with such requirements leads to wrong product creation, and it will take pretty much time, effort and money to correct mistakes, or even redevelop the product from scratch. This surely sounds really unpleasant. However, the situations like described above, are not rare in the area of software product development.

How can Agile Development methods help?

Agile development methods, when they are suitable for the occasion and implemented correctly can help mitigate those risks. I’m not telling that Agile is the best methodology for software product development ever seen. As any other methodology it has its pros and cons, and there are plenty of Waterfall methods that do great, when they are suitable for the situation. I mean, when the requirements are not finally defined, and there’s a high possibility that changes will be introduced, etc., Agile may really help.

As a rule, Software Development Services involve lots of requirements. However, not all of them will be implemented, and most of them will be revised and changed. Changing requirements, in fact, is developers’ pet peeve. As Agile Methodology implies iterative approach to software product development, developers analyze and work with requirements defined for this exact iteration.

The customer, commonly involved in iterations planning, is available to discuss and explain questions related to requirements. If there were some misconceptions or controversies, there’s a chance for developers to find out what the customer meant by “it should perform… you know…the thing like… well, it should be just great!” It was a joke, but you see my point.

Thus, the required functionality is implemented into the product by small parts, giving both developers and customers clarify blear moments, and giving customers the possibility to introduce changes painlessly for the team involved in their software product development. These are essential parts of software development, and success of a product largely depends on requirements. Requirements-related issues are often named among highest risks faced by a Software Development Company.

Some of the principles behind the Agile Manifesto:–

• Customer satisfaction by rapid, continuous delivery of useful software
• Working software is delivered frequently (weeks rather than months)
• Working software is the principal measure of progress
• Even late changes in requirements are welcomed
• Close, daily cooperation between business people and developers
• Projects are built around motivated individuals, who should be trusted
• Continuous attention to technical excellence and good design
• Simplicity
• Self-organizing teams
• Regular adaptation to changing circumstance

Architecture is an integral aspect of software development. The architecture is not the operational software, rather, it is a representation that enables a software engineer to analyze the effectiveness of the design in meeting its stated requirements, consider architectural alternatives at a stage when making design changes is still relatively easy and reduce the risk associated with the construction of the software product.

Architecture serves as the blueprint for both the system and the product developing it, defining the work assignments that must be carried out by design and implementation teams. The rchitecture is the primary carrier of system qualities, such as performance, modifiability, and security, none of which can be achieved without a unifying architectural vision. Architecture is an artifact for early analysis to make sure that the design approach will yield an acceptable system. Architecture holds the key to post deployment system understanding, maintenance, and mining efforts. In short,architecture is the conceptual glue that holds every phase of the product together for all its many stakeholders.

The Goals of Architecture

Product architecture seeks to build a bridge between business requirements and technical requirements by understanding use cases, and then finding ways to implement those use cases in the software product. The goal of architecture is to identify the requirements that affect the structure of the application. Good architecture reduces the business risks associated with building a technical solution. A good design is sufficiently flexible to be able to handle the natural drift that will occur over time in hardware and software technology, as well as in user scenarios and requirements. An architect must consider the overall effect of design decisions, the inherent tradeoffs between quality attributes (such as performance and security), and the tradeoffs required to address user, system,and business requirements./p>
Any Software Development Company should keep in mind that the architecture should:

• Expose the structure of the system but hide the implementation details.
• Realize all of the use cases and scenarios.
• Try to address the requirements of various stakeholders.
• Handle both functional and quality requirements.

The Benefits of Architecture

When you take the time to properly design, implement, document, and evaluate software
architecture for Software Product Development, you can

• predict, achieve, and control quality attribute behaviour and make practical tradeoffs early
• greatly reduce the failure rates of software projects
• produce a rationale for certain architectural decisions made or not made
• communicate with your stakeholders
• reason about and manage change
• enable more accurate cost and schedule estimates
• create evolutionary prototypes
• predict and mitigate risks
• understand the tradeoffs inherent in the architectures of software-intensive systems
• provide insight into how quality goals interact—that is, how they trade off
• plan your staffing needs for Software Development Services

• 1. Private Cloud:
  

  In "private clouds" it is important, that both providers and users are in the same company, thus, for example, all the problems in the field of data security are more or less obsolete. We distinguish the following stages of evolution:

  • a. Exploratory Cloud:
    

    Here trying out cloud functionality within an enterprise is in the foreground. It is mainly about finding out potential advantages and disadvantages for specific applications.

  • b. Departmental Cloud:
    

    Here, Its difficult to have different clouds in different departments. It’s possible but not feasible due to CAPEX involved in the Private Cloud.

  • c. Enterprise Cloud:
    

    In contrast to the "Departmental Cloud" here, providers and users are from different company departments.

• 2. Public Cloud:
  

  A "Public Cloud" is a "cloud", which is public, and, which can be used by any person or company and is no longer limited to internal applications of a single institution or a company. Here, the access is the main problems and the biggest issue to deal with is data security. Each player must think about themselves, how many and which data they want to keep outside its immediate control. A Software Product Development Company can offer services based on this technology. Again, there are subtypes:

  • a. Exclusive Cloud:
    

    "Exclusive Clouds" presuppose that both providers and users know each other. They act out of fixed conditions and enter into a contract from them. There are no strangers.

  • b. Open Cloud:
    

    In "Open Clouds", providers and users do not know each other from beforehand. As a result, providers can offer services without direct input from customers and develop the form of SLAs stipulate needs. Due to the large number of potential users, full financial statements and the use of instances of provider-side being run automatically are needed. An example would be the Amazon Web Services or even the market place model of Zimory.

• 3. Hybrid Cloud:
  

  A company runs its own "private cloud" and also makes use as a failover strategy for peak loads, or a "Public Cloud".

• 4. Community Cloud:
  

  The cloud infrastructure is shared by several organizations and supports a specific community that has shared concerns (eg, mission, security requirements, policy, and compliance considerations). It may be managed by the organizations or a third party and may exist on premise or off premise. This kind of cloud is called “Community Cloud”.

Cloud computing based Software Development Services are the future of modern computing and software based solutions.

Simply, in its approach, the following has to be described: A portion of the IT environment (in this context, the hardware, data center, data storage and software) is 'more self-operated or not provided locally to the users, but, are provided through one or more service providers who are hired. The applications and data are no longer on the local machine or in the corporate data center, but in the (metaphorical) cloud. The design element of an abstract cloud outline is often used in network diagrams to represent an unspecified portion of the Internet.

Access to the remote systems is done via a network such as that of the Internet. But there are also companies in the context of so-called "private clouds", where provision of an internal company intranet is needed. Most providers of cloud solutions leverage the pooling effect from the sharing of resources for its business model.

There are different types of Cloud Computing Solution.The most commonly used ones are:

• Infrastructure
• Platform
• Software

Below, the functioning methods of the different types of cloud computing has been mentioned:

• Infrastructure AS A Service (IAAS):

  This model is called Infrastructure-as-a-Service. The user this to access existing services within the system, manages its computing instances, however, largely self-service within the IaaS concept are typically distributed persistence (like Amazon's Simple Storage Service) and a news service (Message Oriented Middle ware). If the cloud services themselves have designed high-scaling, the same can not necessarily be on the programs that run on the user-introduced computing instances.




• Platform AS A Service (PaaS):

  This model is used as a platform-as-a-Service. Here the application is in the foreground. The developer creates the application and loads it into the cloud. This takes care of itself to the allocation to the actual processing units. Unlike IaaS, here the user has no direct access to the computing instances. He also runs any virtual server. In PaaS scenario, he brings only his logic into the cloud, which occurs compared to a programming. The infrastructure of the cloud itself takes care of this and the instantiation of the processing units and the distribution of data to be processed are required.




• Software AS A Service (SaaS):

  This model is also called software-as-a-Service (SaaS). The application point of view is the most abstract view of cloud services. This does not bring the user's application in the cloud, nor does he take care of scalability and data storage. He uses this to access an existing application, which offers him the cloud from the outside. This use case includes the two earlier mentioned cloud computing methods, because, the cloud's features, such as highly scalable, distributed memory, fail-safe infrastructure, a highly scalable Queuing system are needed. Indeed the basis of the use of an application is that the user of the SaaS service does not come in contact. Cloud computing is being used heavily in providing Software Development Services these days.

]]> http://blog.prensil.com/cloud-computing-basics.html/feed 8 http://blog.prensil.com/cloud-computing-solution-provider.html http://blog.prensil.com/cloud-computing-solution-provider.html#comments Sat, 14 May 2011 06:58:05 +0000 Prensil http://blog.prensil.com/?p=242 RightScale Inc. is the leader in the world of cloud computing management and Zend Technologies can be called as the leader of PHP Web Development. Both of the companies jointly developed a new solution for all sorts of problems related to deploying and managing critical PHP applications with the help of elasticity, portability and high availability of cloud. The newly developed package has been named as RightScale Zend PHP solution pack. This is a kind of pre configured open platform as a Service. It helps to customize and control the cloud environment quite faster and in very simple ways.



The RightScale Zend PHP solution pack is a combination of mainly two platforms. The first one is RightScale Cloud Management Platform and the second one is Zend PHP architecture which is powered by Zend Framework. This is the only production ready solution to make a pre-configured and clustered PHP environment. It scales dynamically and ensures high availability. As a result, the companies can now have the advantages of pre-configured, 3-tier high availability architecture which helps to a faster cloud deployment and retain full control on the architecture. The cloud resource pool can be chosen from huge number of cloud resource pools. The RightScale Zend PHP solution pack is built with RightScale premium onboarding which is a step-by-step path which is responsible for the deployment of the cloud.The customers can easily understand the procedures with the help of this and they can follow the best technology invented jointly by RightScale and Zend.

The two companies, Zend Technologies and RightScale Technologies are offering the PHP users the best practices from both worlds. Users can get the Platform-as-a-Service (PaaS) as well as the flexibility of Infrastructure-as-a-Service (IaaS) from the new technology invented by the duo.

RightScale Zend PHP Solution Pack: Benefits of the package:

• It is equipped with pre-configured Zend PHP architecture which helps to increase the speed in market
• The system is based on Auto-scaling and application load metrics which is supported by load balancing.
• PHP session clustering for high availability
• Monitoring, alerting and diagnostics of system, server and application.
• Portability of cloud.

There are several reasons for the deployment of web applications on the cloud. The first reason for why the Software Development Company and Web Development Company use cloud is the elasticity and second reason is cost savings. There are some other efficiencies too of cloud infrastructure. Most of the newer businesses are using Cloud Computing to develop a new business model because it supports traditional development and production release and testing of web development.

There are several problems solved by RightScale Zend PHP solution pack. It can find wasting time and download, install, configure components. Automatic update is enabled in it. So, it can easily keep track of the updates. It can manage user permissions. It maintains consistent production environments across multiple clouds and avoids lock-in with the providers of cloud infrastructure. These reasons make RightScale Zend PHP solution pack so demanding now.

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