Sentry is an open-source error tracking and performance monitoring platform. It helps developers identify, triage, and resolve software issues in real-time across various programming languages and frameworks. Sentry provides detailed error reports, stack traces, and performance insights to improve application reliability and user experience.

Pros

• Supports multiple programming languages and frameworks
• Provides real-time error tracking and performance monitoring
• Offers detailed error reports and stack traces for efficient debugging
• Integrates easily with popular development tools and workflows

Cons

• Can be complex to set up and configure for large-scale applications
• Self-hosted version requires significant server resources
• Learning curve for utilizing all features effectively
• Free tier has limitations on event volume and retention

Code Examples

1. Basic error capturing in Python:

import sentry_sdk

sentry_sdk.init("https://examplePublicKey@o0.ingest.sentry.io/0")

def divide_by_zero():
    1 / 0

try:
    divide_by_zero()
except Exception as e:
    sentry_sdk.capture_exception(e)

2. Performance monitoring in JavaScript:

import * as Sentry from "@sentry/browser";
import { BrowserTracing } from "@sentry/tracing";

Sentry.init({
  dsn: "https://examplePublicKey@o0.ingest.sentry.io/0",
  integrations: [new BrowserTracing()],
  tracesSampleRate: 1.0,
});

const transaction = Sentry.startTransaction({
  op: "test",
  name: "My First Test Transaction",
});

setTimeout(() => {
  try {
    foo();
  } catch (e) {
    Sentry.captureException(e);
  } finally {
    transaction.finish();
  }
}, 99);

3. Custom context in Ruby:

require 'sentry-ruby'

Sentry.init do |config|
  config.dsn = 'https://examplePublicKey@o0.ingest.sentry.io/0'
end

Sentry.set_context('character', {
  name: 'Mighty Fighter',
  age: 19,
  attack_type: 'melee'
})

begin
  1 / 0
rescue ZeroDivisionError => exception
  Sentry.capture_exception(exception)
end

Getting Started

To start using Sentry in your project:

1. Sign up for a Sentry account at https://sentry.io/
2. Create a new project and obtain your DSN
3. Install the Sentry SDK for your programming language:

# For Python
pip install --upgrade sentry-sdk

# For JavaScript
npm install --save @sentry/browser @sentry/tracing

# For Ruby
gem install sentry-ruby

4. Initialize Sentry in your application code (see code examples above)
5. Deploy your application and monitor errors in the Sentry dashboard