Exploring PaaS with App Engine
Next you'll explore how to app engine run your applications without having your managed infrastructure. App Engine allows you to build highly scalable applications on a fully managed serverless platform. App engine is ideal if time to market is highly valuable to you and you want to be able to focus on writing code without ever having to touch a silver cluster or infrastructure.It’s also ideal if you don’t want to worry about a pager going off or receiving 5XX errors and app engine allows you to have high availability apps without a complex architecture as a fully managed environment app engine is the perfect example of a computing platform provided as a service. App engine can save organisations time and cost in software application development by eliminating the need to buy, build and operate computing hardware and other infrastructure.This includes no server management and no need to configure deployments this allows engineering teams to focus on creating high-value applications instead of no value operations work. You can quickly build and deploy applications using a range of popular programming languages like Java PHP node.js Python csharp dotnet Ruby and go or you can bring your own language runtimes and frameworks. App engine allows you to manage resources from the command line debug Source code in production and run API back and easily using industrial leading tools such as cloud SDK cloud source repository intellij idea visual studio and partial. App engine also automatically scales depending on the application traffic and consumes resources only when code is running this allows to be kept to a minimum you can run your applications and app engine using a standard or flexible environment you can also choose to simultaneously use both environments and individual benefits standard environment offers a fully managed infrastructure for your application that can scale down to zero if not in use this means you stop paying to use the service.However your applications must conform to the dark down environmental happened in standard only the specific version of a few RUN times is supported. You cannot sign into the system to make changes you cannot write to a persistent disk and the configuration of the environment is limited. App engine flexible runs your application in a darker container you can use any http-based runtime the virtual machines are exposed allowing you to log into them and write to persistent disks however the system will not scale to zero. You will still pay for the service even if users aren’t using an application because VM instances in the flexible environment are compute engine virtual machines there are far more options for infrastructure customisation you’re also able to take advantage of a wide array of CPU and memory configurations.In summary IF YOU JUST NEED a high-performance managed infrastructure and can conform to strict runtime limitations then APP ENGINE standard is a great option. If you need to use custom RUN TIMES or if you need a less rigid and environment but still want to leverage a platform as a service then happened flexible would be a more suitable option. The front end is often critical to the user experience to ensure consistent performance the built-in load balancer will distribute traffic to multiple frontends and scale the front end as necessary. The backend is for more intensive processing this separation of functions allows each part to scale as needed note that the app Engine services modular and this example shows a single service more complex architectures are possible. When using app engine you also have multiple options to store application data including cash in through app engine memcache Cloud storage for any objects up to 5 TB in size Cloud datastore for persistent low latency memory for saving data to applications cloud sequel which is a relational database that can be run on a persistent disk greater than 1 terabyte in size and cloud bigtable which is a nosql database for heavy read write and analysis. The automatic scaling of app engine allows you to meet any demand and load balancing distributes load balance compute resources and single or multiple regions close to users to meet higher availability requirements.App engine allows you to easily host different versions of your app which includes creating development test, staging and production environments. Stack driver gives you powerful application diagnostics to debug and monitor the health and performance of your app and you can leverage robust security tools like cloud security scanner these services are provided with high availability and guaranteed redundancy.