Running jmx2graphite as a java agent to push the JMX metrics into Graphite

Rishi KhandelwalMarch 19, 2019March 20, 2019Architecture, AWS, Cloud, cluster, DCOS, DevOps, Docker, Java, linux, Microservices, Monitoring, Scala, Streaming Solutions

In my previous blog, we discussed how to monitor a Kafka stream application using Grafana and Graphite. In this solution, we used jmx2graphite as a metrics exporter which takes the metrics from the Jolokia URL where Jolokia exposes the JMX metrics and pushes those metrics to Graphite. But, there is a problem with this solution that we need to deploy one jmx2graphite per service. So Continue Reading

Firebase: RealtimeDB & Firestore

SiddhantJanuary 21, 2019Cloud, DatabaseDatabase, firebase, firestore, Google Cloud Storage

Recently, while searching for persistence solutions for one of our projects, we started considering the hosted and managed offerings on the Firebase Platform. Firebase has two primary database offerings, the original Realtime Database (RtDB) and the newer Cloud Firestore (CFS) which is currently in beta. In this post, we’ll briefly list down some of the current similarities and differences that we encountered while tinkering with Continue Reading

Fault Handling in Apigee

Prashant SharmaJune 6, 2018June 6, 2018Architecture, Cloud, Microservices, Web ServicesAPI, Apigee, ApiManagement, AssignMessagePolicy, FaultHandling, FaultRules, google

Hi all, In my previous blogs on APIGEE we: Went through the basic introduction of Apigee. Went through the main policies and how to apply them on our proxies. Saw how to extract out a header, extract a list of values out of a header. If you like you can go through those once again here: Basics of Apigee. click here Playing with Policies. click here Extract the Continue Reading

Unveiling The Mystery Of Serverless

Shivangi GuptaMarch 29, 2018Amazon, AWS, AWS Services, Cloud, ScalaAWS, azure, server, serverless, serverless architecture, serverless computing

In this blog, we will explore about Serverless and why it is trending so much? Serverless, is itself a self-explanatory word, means there are no servers. But, is it really true? No, it is not. Serverless does not mean the absence of servers. There are servers actually, it’s just that we don’t have to manage them. All the infrastructure is provided by companies like AWS, Google, Azure Continue Reading

Terraform: Enabling developer to create and manage deployment through code

Simarpreet Kaur MongaMarch 14, 2018Amazon, Architecture, AWS, Cloud, DevOpsDesign, technology

In this blog post, We will walk you through Terraform which is a tool for building, changing, and versioning infrastructure safely and efficiently. Terraform enables the developers to properly manage the infrastructure through code. The set of files used to describe infrastructure in Terraform is simply known as a Terraform configuration. These files have extension .tf. Configuration files describe to Terraform the components needed to Continue Reading

Knolx – Intoduction to AWS IAM

Joseph RossMarch 22, 2017June 13, 2018Amazon, AWS, Cloud, Scala, Security, Security Controls

Hi all, Knoldus has organized a 30 min session on 3rd March 2017 at 4:50 PM. The topic was Introduction to AWS IAM. Many people have joined and enjoyed the session. I am going to share the slides here. Please let me know if you have any question related to linked slides.

Mounting EBS(Elastic Block Store) volume to EC2(Elastic Compute Cloud) instance.

Sahil SawhneyFebruary 4, 2017February 5, 2017Amazon, Amazon EC2, AWS, AWS Services, Cloud, DevOps, Scala, Scala Days

In this blog we will consider simple steps by which we can attach and mount a volume(elastic block store) to an ec2 instance. Following steps must be followed : Step 1 -> Creating an ec2 instance We will be creating a Linux instance (m4.large) which comes with Cent OS as the default operating system. Steps of creating an instance are clearly mentioned in official amazon docs, Continue Reading

Introduction to AWS IAM

Joseph RossOctober 18, 2016June 13, 2018Amazon, AWS, AWS Services, Cloud, DevOps, ScalaAWS SDK, IAM

AWS IAM roles is a web service which gives you secured “Control Access” to AWS services for your users. IAM policies specify which services/actions are allowed or denied. You attach policies to group, users, roles which are then subject to permission that you define. In other words, IAM policies define what your user can do to your AWS services. IAM is Identity and Access management Continue Reading

Scala in Business | Knoldus Newsletter – April 2015

Rishi KhandelwalApril 27, 2015July 25, 2018Agile, Akka, Amazon EC2, Cloud, Java, JavaScript, LiftWeb, MongoDB, Play Framework, Scala, Slick, Spark, Web

Hello Folks We are back again with April 2015, Newsletter. Here is this Scala in Business | Knoldus Newsletter – April 2015 In this newsletter, you will get the business related news for Scala. How organisation are adopting Scala for their business, how Scala related technologies increasing the performance of application and how Scala is getting popular in the industry So, if you haven’t subscribed to Continue Reading

Conditional logging with Logback in Scala

Rishi KhandelwalApril 16, 2015September 10, 2018Agile, Akka, Cloud, JavaAgile, Akka, Architecture, Cloud, Code Quality, Concise code

Hello Folks In my project , i got a scenario where I wanted conditional logging. I was using Logback framework for the same. I wanted to set different logging level for staging and production. Either i could do manually changes in logback.xml for logging level for staging and production both. But this is not the good practice. Then I found the solution of implementing the Continue Reading

Scala in Business | Knoldus Newsletter – March 2015

Rishi KhandelwalMarch 25, 2015September 10, 2018Akka, Architecture, Cloud, Future, Java, NewsAkka, Architecture, Big Data, Cloud

Hello Folks We are back again with March 2015, Newsletter. Here is this Scala in Business | Knoldus Newsletter – March 2015 In this newsletter, you will get the business related news for Scala. How organisation are adopting Scala for their business, how Scala related technologies increasing the performance of application and how Scala is getting popular in the industry So, if you haven’t subscribed to Continue Reading

Knolx : Collections In Scala

Rishi KhandelwalFebruary 13, 2015September 10, 2018Akka, Cloud, Future, Java, Non-Blocking, Play Framework, Scala, Web

Harsh Sharma, one of our intern who joined us on January 15, 2015 presented a knolx on “Collection In Scala”. He shared whatever he has learnt in his 1 month internship period. We appreciate that. Keep up learning and sharing your knowledge.

Integrating sending mail functionality with LogBack in Scala

Rishi KhandelwalFebruary 9, 2015July 25, 2018Akka, Cloud, Java, Play Framework, Reactive Application, Scala, Web

Few days ago, I had the requirement that whenever there will be an exception in the application, we should get an email for this. Earlier, I was just logging the error log using LogBack : val logger: Logger = LoggerFactory.getLogger(this.getClass()) logger.error(“…………….”) To do this, there are 2 ways : 1. Use the email sending code at every place wherever i have used logger.error. 2. Use Continue Reading

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