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Stories, guides, and lessons from the world of observability

Last9 Named a Gartner® Cool Vendor in AI for SRE and Observability

Last9 Named a Gartner® Cool Vendor in AI for SRE and Observability

Gartner recognizes Last9 in their latest Cool Vendor report for unified telemetry and agentic SDK—moving teams from reactive monitoring to proactive ops.

Nishant Modak

Nishant Modak

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An isometric agent console wired to three tool devices, with only one cable and one tool glowing lime as the active call

AI Agent Observability: What to Trace and What It Catches

AI agent observability means tracing tool calls, reasoning steps, and handoffs, not just tokens and latency. Here's what to instrument and why.

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Sejal Pandey

Sejal Pandey

A row of isometric Puma worker blocks, one glowing lime with all its threads busy and requests queued beside it

Rails Performance Monitoring: What to Watch and Why It Slows Down

How to monitor a Rails application in production: reading Puma's stats endpoint, spotting GC pressure, and finding the query that's actually slow.

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Sejal Pandey

Sejal Pandey

Four isometric automation units joined by a cable, one glowing lime to mark the job that was picked

SRE Automation Tools: What to Automate and Which Tools Help

SRE automation covers four different jobs: runbook automation, self-healing infrastructure, drift detection, and resilience testing.

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Sejal Pandey

Sejal Pandey

A row of PHP-FPM worker slots with one overloaded and requests queuing behind it

PHP Performance Monitoring: What to Watch and Why It Slows Down

How to monitor a PHP application in production: reading the PHP-FPM status page, checking OPcache health, and finding the request that is actually slow.

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Sejal Pandey

Sejal Pandey

An isometric line drawing: three needle meters are cabled into a central switchboard console whose grid of indicator lights has exactly one lamp lit, standing for many scattered signals correlated down to a single answer

What Is AIOps? Definition, How It Works, and Real Examples

AIOps explained in plain terms: what it means, how it differs from AI-SRE and MLOps, how it detects problems, and whether a small team needs it.

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Sejal Pandey

Sejal Pandey

Isometric line art of an oscilloscope, an analog meter, and a reel-to-reel tape deck all cabled into a central console with a lime-glowing waveform screen, showing one AI system watched through several observability signals at once

Best AI Observability Tools in 2026: 8 Tools Compared

Eight LLM and AI agent observability platforms compared: what each tracks, pricing and free tiers, self-hosting options, and who each is built for.

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Sejal Pandey

Sejal Pandey

An isometric line drawing: a small analog meter and a reel-to-reel tape recorder, one on each side, are wired by cables into a central mechanical adding machine whose display glows lime.

Cloud Cost Management for Observability: A Practical Guide

Observability spend is outgrowing infrastructure budgets. What drives the cost up, how pricing models work, and a practical framework to manage it.

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Sejal Pandey

Sejal Pandey

A branch point labeled leaving Cribl forking into three paths: open-source self-hosted tools, commercial angle-specific platforms, and Last9's full-stack platform

6 Cribl Alternatives Worth Evaluating in 2026

Cribl's credit pricing and setup complexity send teams looking elsewhere. Compare 6 real Cribl competitors and alternatives, for observability and SecOps.

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Sejal Pandey

Sejal Pandey

The same seven-layer observability stack twice — sealed behind one abstraction when you buy it, and drawn layer by layer, each with the role that owns it, when you build it

Why you should (not) build your own observability stack

If you are able to build it better than your vendor, then change your vendor. Not build it.

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Rishi Agrawal

Rishi Agrawal