Blogs

AWS Lambda has been launched with the new features for Mobile Developers. The service was launched last year with the preview version at AWS re:Invent. We have given the detailed description about AWS LAMBDA in our previous blogs : An Introduction To AWS Lambda and AWS Lambda walk-through. It is a compute service that makes […]

To start, we create a Lambda function to consume events published by Amazon S3. For any object uploaded to a bucket, S3 will invoke our Lambda function by passing event information in the form of function parameters. AWS Lambda executes the function. As the function executes, it reads the S3 event data, logs some of […]

Yet again Amazon ended the AWS Summit in San Francisco in the best fashion setting various benchmarks for other Cloud Services providers. One of the services which was announced towards the end of the keynote was the Amazon Elastic File System. Amazon EFS is a file storage service for Amazon EC2 instances. In my opinion […]

We Can upload file on Amazon S3 Server directly without intervention of web server by using REST API call on S3 Server. Use Case : File upload was required on mobile app without integrating SDK because integrating SDK causes app to be heavier in size and also if it goes through our web server than it would […]

In almost every project we need to deal with files. But what if size of file is too large ?? Heap gets full and JVM rewards us by throwing OutOfMemoryError. Java provides a class called MappedByteBuffer (part of JavaNIO), which helps us dealing with large size files. MappedByteBuffer is a class which creates Virtual-memory mapping […]

This blog is to enable AWS chef professionals to change pem of running servers or to add a new user with sudo privileges to an EC2 server farm using chef. The post actually refers to a production usecase in which there is a huge number of instances running on single or multiple pem files which […]

In continuation with my previous blog “Getting Started with Boto ( python Interface for AWS )”,  today we are going to discuss one of the use case that we used to do daily. Deleting EBS Snapshot which is N days older. We’ll be writing python script using Boto library to delete EBS snapshots which is […]

ClusterSSH is a group SSH administration tool. It is used to control number of xterm windows via single Administration console to allow commands to run on multiple servers over an SSH connection. Sometimes, you may have chances to enter same command on many servers. To do that, you have to login to each server and […]

Firebase is a service that allows us to create real-time apps without having a native back-end(server). Storing and retrieving of data in real-time is done directly from the browser(front-end), i.e. no back-end services is required to fetch the data. Whenever we save data in Firebase, it generates a unique identification ID for each object. Sometimes […]

AWS CloudFormer is a template creation tool and it creates AWS CloudFormation template from our existing resources in AWS account. We can select any supported AWS resources that are running in our account, and CloudFormer creates a template in an Amazon S3 bucket. We will be using AWS CloudFormer to create template of existing infrastructure. […]

This blog post refers to the limitation of not being able to directly spin an instance using an ISO image and to connect a virtual CD ROM with AWS instances. Till date, only workaround for this problem is to create an on-premise virual machine on some hypervisor such as VMware esxi or Cetrix Xen etc. […]

Angular provide services for handling non-view logic, communication with server(back-end) and can holds data & state. These services are singleton objects that can be used to share and organize code. For doing so, angular provides us five cool ways to make a service on the bases of once need. Following are the five approaches that […]