Download IBM Cloud Platform Application Development v2.C5050-384.Prep4Sure.2018-07-17.34q.vcex

The first test will be used as a baseline for performance. References: https://www.ibm.com/blogs/bluemix/2015/09/load-testing-bluemix-load-impact/

To ensure that your app can interact with a Data Connect service instance, add code to your app to parse the connection information in the VCAP_SERVICES environment variable. The value of the VCAP_SERVICES environment variable contains the information that your app needs in order to interact with the Data Connect service. In the first REST method that your app calls, use the user ID and password from the VCAP_SERVICES environment variable to authenticate by using HTTP basic access authentication. The first call returns an authentication cookie, which other REST calls from your app can use. References: https://console.bluemix.net/docs/services/dataworks1/index.html#getting-started-with-data-connect

References: http://www.learnquest.com/assets/pdfs/3_IBM_Bluemix_boilerplates.pdf

IBM Object storage is based on SWIFT api . The service uses OpenStack Identity (Keystone) for authentication and can be accessed directly by using OpenStack Object Storage (Swift) API v1 calls. References: https://harishvarma8055.wordpress.com/2017/06/30/object-storagehow-to-generate-credentials-and-token-using-node-js-application-on-bluemix/

When you bind a service to your application Bluemix will add details about the service to an environment variable VCAP_SERVICES. VCAP_SERVICES allows your application to discover bound services and how to access the service. User-provided services (private to an organization) can be created - accessed the same way as a Bluemix provided service.

After you create the toolchain, you change your app’s code and push the change to the GitHub repo. When you push changes to your GitHub repo, the delivery pipeline automatically builds and deploys the code that is in the repo. References: https://www.ibm.com/blogs/bluemix/2017/04/add-toolchain-app/

The database name must begin with a letter and can include only lowercase characters (a-z), numerals (0-9), and any of the following characters _, $, (, ), +, -, and /. References: https://console.bluemix.net/docs/services/Cloudant/getting-started.html#getting-started-with-cloudant

A backing service is, basically, any networked attached service that your application consumes to do its job. This might be a MongoDB instance, PostgreSQL database, a binary store like Amazon’s S3, metrics-gathering services like New Relic, a RabbitMQ or ActiveMQ message queue, a Memcached or Redis-based cache, an FTP service, an email service or indeed anything else. The distinction is not so much what the service is so much as how it’s exposed and consumed in an application. References: https://dzone.com/articles/12-factor-app-style-backing

As the application fails to start the most likely cause of the problem is that the application does not have enough memory. Note: Receiving an OutOfMemoryError normally means one of two things:You heap size is not large enough for the memory requirement of the application. You have a memory leak The quickest thing to try would be to increase the memory allowance for your application, which will also increase the Java heap size for you. You can do this using a "memory" entry in the manifest.yml. For the second, you really need to generate a heapdump so that you can analyse the problem using Memory Analyzer. References: https://developer.ibm.com/answers/questions/29036/out-of-memory-error-on-bluemix-app.html

B: Although you can use the entities in a package directly, you might find yourself passing the same parameters to the action every time. You can simplify the process by binding to a package and specifying default parameters, which are inherited by the actions in the package.Example: Bind to the /whisk.system/samples package and set a default place parameter value.wsk package bind /whisk.system/samples valhallaSamples --param place Valhalla ok: created binding valhallaSamplesC:  Several packages are registered with Cloud Functions. You can get a list of packages in a namespace, list the entities in a package, and get a description of the individual entities in a package.Example: Get a list of packages in the /whisk.system namespace.wsk package list /whisk.system Note: Using the Cloud Functions CLIOnce the environment is configured, you can use the Cloud Functions CLI to perform the following tasks:Run your code snippets, or actions, on Cloud Functions Use triggers and rules to enable your actions to respond to events. Learn how packages bundle actions and configure external events sources. Explore the catalog of packages and enhance your applications with external services, such as a Cloudant event source. References: https://console.bluemix.net/docs/openwhisk/openwhisk_packages.html#openwhisk_packages