Rollbar

San Francisco, CA, USA
2012
  |  By Rollbar
Think of two pieces of code (let's call them A and B) that need each other to work. A says, "I need B to do my job," and at the same time, B says, "I need A to do my job." But if A is waiting for B to work, and B is waiting for A to work, neither can start working. This "waiting on each other" situation causes Python to get stuck and throw a circular import error.
  |  By Rollbar
The "Unsupported class file major version 61" error in Java means you're trying to run a Java program that's too advanced for the version of Java you have installed. To fix this, either update your Java to version 17 or newer, otherwise recompile the program with an older Java version that matches your runtime environment.
  |  By Rollbar
In a nutshell, here's the biggest difference between Angular and React: With Angular, you get a standardized approach to everything. It’s a structured environment that gives you clear direction and all the resources you need within arm's reach, minimizing venturing outside for additional tools or materials. React, on the other hand, resembles a playground where you're handed the basic building blocks and left to your own devices.
  |  By Rollbar
“Subscriptable” is just a fancy way of saying "something you can use square brackets on to get parts from it.” For example, my_list accesses the element at 0 and key, respectively. In Python you can only use square brackets [] to access elements of a list, array, or dictionary. If you try to do the same thing with a function, you get the “function object is not subscriptable” error.
  |  By Rollbar Editorial Team
The IndexError: list index out of range error occurs in Python when an item from a list is attempted to be accessed that is outside the index range of the list. The range of a list in Python is , where n is the number of elements in the list.
  |  By Rollbar
The error “Client network socket disconnected before secure TLS connection was established” indicates something went wrong when setting up a secure connection with the server you’re communicating with. This can happen because of an unstable internet connection, wrong security settings on the server, or things like firewalls getting in the way.
  |  By Rollbar
The Java error “Could not find or load main class” is thrown when the JVM fails to find or load the main class while executing a program. This is often due to simple mistakes like typing the wrong class name or having the class file in the wrong place. It usually occurs when executing a Java program from the command line. Install the Rollbar Java SDK to identify and fix these errors.
  |  By Rollbar
The error 'int' object is not subscriptable occurs when you attempt to use indexing or slicing on an integer, a data type which doesn’t support these operations. An integer in Python is a data type that represents a whole number. Unlike lists or dictionaries, integers do not hold a sequence of elements and therefore do not support indexing or slicing.
  |  By Rollbar
Two names that have been making waves with their distinct approaches to building web apps are Next.js and Vite.js. Next.js is a React framework specialized in server-side rendering (SSR), static site generation (SSG), and hybrid applications. It provides features like file-based routing, image optimization, and is particularly suited for projects where SEO and fast initial load times are priorities.
  |  By Rollbar
Sealed classes are a feature introduced in Java 15 which bring a new level of control and predictability to class hierarchies. A sealed class is a class that explicitly specifies which other classes are allowed to extend it. This offers a way to restrict class hierarchies, making them more predictable and less prone to unintended extensions.
  |  By Rollbar
Nick integrates Rollbar into a brand new Nestjs backend application. There's a bit of trouble getting rolling, and Nick's computer doesn't completely cooperate, but hey, he got it done!
  |  By Rollbar
Leverage Rollbar's People tracking feature and get additional visibility over which of your users are affected by each error, the history of errors experienced by a particular person, as well as the list of all people who have ever experienced an error. Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
  |  By Rollbar
Telemetry allows you to view a 'breadcrumb' of events leading up to an exception directly in the Item details view. Telemetry is currently available in the Javascript, iOS, .NET, and Node.js SDKs. (and more to come!) Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
  |  By Rollbar
Simplify your error management workflow and configure Rollbar to automatically resolve items on deploy, or set an inactivity timer to resolve items if they have not occurred in a certain number of days. Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
  |  By Rollbar
Control the state and priority level of your incoming items, and learn how you can quickly act upon them via Slack! Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
  |  By Rollbar
Rollbar is employed for a number of use cases, but the first and foremost of these is monitoring your code in production. In this installment of the solutions video series, you will learn how different Rollbar features enhance your ability to monitor and improve the customer experience for all users.
  |  By Rollbar
The latest video in the Rollbar Solutions series, Low-Risk Releases, shows how Rollbar can be used to improve the release process for DevOps teams. Traditionally, releasing software has been a pain point for these teams; code changes made to higher environments provide opportunities for bugs to rear their ugly heads and affect customers directly. Rollbar's real-time monitoring and intelligence solutions help you find and fix these issues more quickly and effectively, reducing MTTA/MTTR metrics and thus the overall customer impact of these issues.
  |  By Rollbar
Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
  |  By Rollbar
Learn how to link to log data in AWS CloudWatch from Rollbar to help you quickly understand the root cause of an error. Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.
  |  By Rollbar
Configure your Django project with Rollbar easily! Rollbar is the leading continuous code improvement platform that proactively discovers, predicts, and remediates errors with real-time AI-assisted workflows. With Rollbar, developers continually improve their code and constantly innovate rather than spending time monitoring, investigating, and debugging.

Rollbar provides real-time error monitoring, alerting, and analytics for software developers. It collects and analyzes errors in web and server applications, so developers can find and fix them faster. Rollbar's live feed is used to detect errors and exceptions in real-time, especially useful immediately after deploys.

Use Rollbar to:

  • Get live, granular, and contextual application error data
  • Perform real-time root cause analysis on production errors
  • Share a common monitoring diagnostic tool across Dev and Ops

Catch errors before your users do. Resolve errors in minutes, and deploy with confidence.