“Shift left” is a relatively new term that means activities and responsibilities are moving earlier in an application’s lifecycle (that is, moving left on the delivery chain).
The shift left concept has been applied to practices like security and QA. But its usefulness is not limited to those processes. This article discusses three reasons why application performance monitoring (APM) can be valuable earlier in the development cycle.
In today’s IT world where timelines are always under pressure to be shortened—testing, especially performance testing, is often one of the first areas to get bumped from the schedule, leaving operations (“Ops”) teams to deal with tracking down and diagnosing application performance issues.
APM tools have been invaluable for just this reason. With automated application component discovery, modeling, and display combined with deep-dive component monitoring and analytics, Ops teams have been able to provide development teams with detailed information that leads to rapid discovery and resolution of performance issues in production.
While there are many ways shifting these tools left will help, this article is going to cover three of the biggest reasons.
Historically, APM tools have been used by and designed for IT operations. They have been great at monitoring applications and alerting someone about performance degradation. Some were better than others for pinpointing the root cause of problems.
Newer APM tools, like Retrace, were designed for developers. They combine application logging, errors, and detailed traces of what their code was doing. These details make it easy for developers to identify the exact root cause of performance problems with their applications.
By utilizing APM tools in development and QA, many performance issues and bugs can be identified before they make it to production. Performance baselines can be set in QA and new builds can be compared to that baseline for potential problems.
Giving developers access to performance details, applications logs, and errors enable them to better troubleshoot and validate problems in QA environments.
Developers can also use tool like Prefix on their development machines to find problems in their code as they are writing their code.
It costs less money to fix a bug that is found in QA than in production. There is a significant ROI to find problems before they get to production.
When development and Ops teams use the same toolset to track performance and pin down defects from inception to the retirement of an application, this provides a common language and faster handoffs between teams.
APM tools, like Retrace, can be used in development, QA, and production. This keeps everyone using the same toolset across the entire development lifecycle.
In a non-unified environment, each team would need to reproduce errors, recapture the logs, and reanalyze the data in their own toolset.
Traditionally, it would be like this:
With a unified toolset used across all environments, the scenario runs more like:
The developer is productive on the issue in minutes, not hours or days. Application performance management tools, like Retrace & Prefix, help development and operations teams better collaborate across all deployment environments.
With the three reasons given above, you can see the value of APM shifting left. The time saved by operations and QA teams offset additional tooling costs. Plus, better performance in customer-facing environments will improve satisfaction levels, and less interruptions to all your e-commerce revenue streams will keep executives happy.