You've deployed a new feature into production. You've done your unit testing, fixed lots of bugs, your code is awesome. Now it's time for hundreds/thousands/millions of users to break...err...use your feature. You're diligent about tracking usage in real-time, and getting customer feedback when something goes wrong. You track the performance and response time impacts on the server. All is good...except...that feature isn't quite working for a specific group of users. Now what?

With Mezmo Log Analysis, you can monitor for stack traces and exceptions in real time. In your browser, you can tail -f like a boss and see real-time logs from all your app sources, Nginx, and Redis. Since you can combine data from multiple sources and see related events, you can do a thorough root cause analysis and surface hard-to-find bugs.

To track your new feature in THE Mezmo Log Analysis dashboard,  you can either watch the error happen in real time, go back in time to when you deployed, or jump directly to an error that happened in the last hour.

Here are some examples of how to use Mezmo's powerful search:

• Find lines that contain "403 Forbidden" and "login":

Search: "403 Forbidden" login

• Find lines that contain "ClassCastException" or "NullPointerException":

Search: ClassCastException OR NullPointerException

• Exclude lines where the field LEVEL is "info" starting from 2 hours ago:

Search: -level:info Timeframe: 2 hours ago

• Find lines that contain "'str' object" but does not contain "TypeError" starting from last friday 10am.

Search: "'str' object" -TypeError Timeframe: last friday 10am

Here are other examples of what you can put in the timeframe: an hour ago, 5:42am, yesterday 1pm, 2/24 2:30pm

Now that you've zeroed in on the problem, you can always set up your query as a view and set up alerts to notify you if this ever happens again.

When you use Mezmo Live Streaming Tail, you're getting

• A real-time stream that's updated as soon as Mezmo receives new log data
• A single view of data from multiple sources
• To focus on important data with powerful searching, filtering, highlighting capabilities

Let us know what you've been doing to surface those hard to find bug in production today. It only takes minutes to see your live streaming log, get started with Mezmo now.