Troubleshooting Heroku Applications | Heroku Cloud Application Development

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Heroku Cloud Application Development

By : Anubhav Hanjura

5 (1)

Heroku Cloud Application Development

5 (1)

By: Anubhav Hanjura

Overview of this book

Heroku Cloud Application Development

Heroku Cloud Application Development

Credits

Credits

About the Author

About the Author

About the Reviewers

About the Reviewers

www.PacktPub.com

www.PacktPub.com

Preface

Preface

Free Chapter

Hello Heroku

Hello Heroku

What is cloud computing?

Cloud service models

What is cloud application development?

Key advantages of cloud application development

Introducing Heroku

Walking down the memory lane

An overview of Heroku's architecture

The Heroku feature set

Test driving Heroku

Summary

Inside Heroku

Inside Heroku

The Heroku platform stack

Request routing in Heroku

Heroku's logging infrastructure – the Logplex system

The Heroku add-on architecture

Programmatically consuming Heroku services

The Heroku process architecture

Running applications locally

Setting local environment variables

Process formation

Running a one-off process

Running anything

Summary

Building Heroku Applications

Building Heroku Applications

Heroku's guiding influence – the Twelve-Factor App methodology

Creating a Heroku application

Configuring your Heroku application

Introducing buildpacks

The slug compiler

Summary

Deploying Heroku Applications

Deploying Heroku Applications

Deployment on Heroku

Getting a Heroku account

Installing the toolbelt client kit

Logging into the Heroku account

Writing your application

Pushing your application to Heroku

The Git vocabulary

Creating a Heroku remote

Renaming an application

Sending code to Heroku

Optimizing slug size

Cloning existing Heroku applications

Forking an application

Transferring Apps

Optimizing deployments

The choice of a region

Tracking application changes

Release management

Summary

Running Heroku Applications

Running Heroku Applications

The Heroku app lifecycle

The Heroku CLI

Running your cloud apps locally

The Apps page

Summary

Putting It All Together

Putting It All Together

Heroku's support for Java

Integrating Eclipse with Heroku

Managing Heroku apps in Eclipse

Summary

Heroku Best Practices

Heroku Best Practices

The One Cloud development platform

Heroku and the data store

Creating a Heroku Postgres database

Disaster recovery in Heroku PostgreSQL

High availability Postgres

When does Heroku Postgres failover?

Configuring domains the right way

Optimizing applications

Managing your app dynos

Using the Heroku scheduler

Using NewRelic to keep the dyno alive

Summary

Heroku Security

Heroku Security

Overview

Communication between the developer's machine and the Heroku platform

Application security tools

Summary

Troubleshooting Heroku Applications

Troubleshooting Heroku Applications

The need for troubleshooting

Your window to the running app – the logs

Techniques for troubleshooting your app

A recommended Heroku configuration

Maintenance windows

Error classification in Heroku

Summary

Advanced Heroku Usage

Advanced Heroku Usage

Experimenting with Heroku Labs

Introducing Websockets

Heroku and Websockets

Your first Heroku Platform API call

Sharing your app on Heroku

Summary

Index

Index

Chapter 9. Troubleshooting Heroku Applications

In the last few chapters, we learned how to build, deploy, and run Heroku apps. We also explored how to test your apps locally using foreman and once that was done, how to successfully deploy your app to the Heroku platform. We have also looked at the various options available to run and manage our apps through the Heroku dashboard—a one stop shop for many app management needs. Now, we are at a point where the application is up and running. Suddenly the app stops working or starts throwing errors at you. It is time to troubleshoot what went wrong. This chapter covers this very important aspect of deploying an app on Heroku, that is, troubleshooting the app when it starts misbehaving.

In this chapter, we will cover the following topics on troubleshooting in Heroku:

Using Heroku's logging infrastructure to troubleshoot your app
Troubleshooting the Heroku app using available tools and techniques
Learning how to troubleshoot the app downtime
Understanding...

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Programming languages

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