Tag: Monitoring
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Application Monitoring Best Practices: 15 Lessons From Real On-Call Incidents
If you’ve been on call long enough, you’ve lived this exact moment: checkout’s p99 jumps, nothing else looks wrong, and you’re staring at three separate tools trying to figure out which one is lying to you. Years of on-call rotations across enough companies teach the same application monitoring best practices, usually the hard way, usually…
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AWS Lambda Functions in Python: A Practical Guide
AWS Lambda is a serverless compute service that runs your code in response to events, without requiring you to manage any servers. Developers use it for event-driven and short-running tasks like processing file uploads, handling API requests, and running scheduled jobs. The code you deploy to Lambda is called a Lambda function, and it handles…
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Session Inspector: See Exactly What Happened In Any User Session
A session replay only gets you halfway to a fix. Watching what a user did is useful. But on its own, it doesn’t tell you which request failed, what error fired, or whether the user was already stuck before things broke. Without that context, a recording is just a video with no explanation attached. You…
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How to Monitor Docker Memory Usage
You deploy a container, then check on it a few hours later, running docker stats out of habit. It reports 340 MiB of memory used against a 512 MiB limit. All seems fine. A later check shows the number has risen to 410 MiB, even though traffic hasn’t budged. Is the app leaking, or is the Linux…
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10 Best React Performance Monitoring Tools in 2026
Choosing the right React performance monitoring tools starts with a hard truth: the React Profiler tells you nothing about what happened to a real user on a three-year-old Android phone last night. Local development hides the exact conditions that break production performance: device CPU, network quality, and every API call your components depend on. This…
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Trace Explorer Gets a Smarter Way to Investigate Distributed Traces
When a request fails, it rarely fails in one place. It moves through multiple layers: network, application code, and database, with each layer adding its own step to the journey. When something breaks, the hard part is finding exactly which layer, which step, and which downstream call actually caused it, not just that the request…
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How Middleware Minimizes False-Positive Alerts
False positive alerts cost teams more than most people realize. Teams routinely receive over 1,000 alerts a week, and only 2 to 5% are worth acting on, according to Middleware founder & CEO Laduram Vishnoi. We built false positive alert detection into OpsAI to fix that. It checks every alert as soon as it fires…
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React Error Monitoring: A Practical Guide to Catching, Debugging, and Fixing Production Errors
React error monitoring only works if you can see the errors your error boundaries hide. Most production failures in a React app never reach a dashboard. They happen inside event handlers, async code, and promise rejections that boundaries were never built to catch. Middleware RUM captures those errors as they happen, unminifies the stack, and…
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7 Reasons DIY AI Agents Fail at Production Root Cause Analysis
Pointing a frontier model at your logs makes a great Friday demo. Running it against a real Sev1 at 3 am is a different problem entirely. There are broadly seven gaps that emerge when engineering teams build their own AI SRE agent: fragmented telemetry, Kubernetes opacity, shallow reasoning without an evidence chain, missing tribal knowledge,…
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AWS Lambda Limits: The Complete Guide to Quotas, Hard Limits, and Workarounds
AWS Lambda enforces more than a dozen limits at once. Most teams only discover the one that matters after a function fails in production. Some of these limits are hard ceilings that AWS will never raise. Others are soft quotas that scale automatically or on request. This guide covers every current Lambda quota in one…
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Run Production Ahead of the Alert: How an AI SRE Agent Works From Inside Your Observability Platform
Your on-call engineer spends nearly 60% of their week hunting root causes that already happened, while the failed deploy that started it all never triggered a single alert. OpsAI is Middleware’s AI SRE agent: it watches your Kubernetes, APM, RUM, and log telemetry continuously, catches the failures that don’t page anyone, and turns the cause into…
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AWS Lambda Timeout Best Practices: Causes, Limits, and Fixes
“Task timed out after 900.00 seconds.” That line in CloudWatch means your function ran out of time, and depending on where it happened, you might have a partial database write, a duplicate charge, or a customer staring at a blank screen. AWS Lambda timeouts are rarely about needing more time. Most trace back to a…
