Redis Monitoring Tools: 8 Platforms for Tracking Memory, Hit Ratio and Evictions

Redis is an in-memory data store, so small problems escalate quickly. A full memory pool triggers evictions, a slow command blocks the single-threaded event loop, and a lagging replica turns a failover into data loss. Built-in commands such as INFO and SLOWLOG expose the raw numbers, but they give you no history, no alerting and no correlation with application behavior.

This guide compares eight monitoring tools using SaaSPodium listing data (pricing type, deployment and target use) and the capabilities each vendor documents. For continuous-monitoring principles, the NIST SP 800-137 guidance on information security continuous monitoring is a useful framework, and the OWASP Top Ten reminds teams that exposed or misconfigured data stores are a recurring risk. If you run the database itself, browse our Redis listing and the full Database Management category.

Related reading: see our guide to MongoDB monitoring tools for a document-database comparison.

What to Monitor in Redis

A useful Redis dashboard tracks memory, cache efficiency, command latency, persistence, replication and client connections. These metrics come from the INFO command and reveal capacity problems and misuse before they cause outages for your application.

• Memory: used_memory, maxmemory and the fragmentation ratio (used_memory_rss divided by used_memory).
• Cache efficiency: keyspace_hits, keyspace_misses and evicted_keys.
• Latency: the slow log and latency monitor, which flag commands that block the event loop.
• Persistence and replication: RDB and AOF status, last save time, replica offset and link status.
• Clients: connected_clients, blocked clients and rejected connections.

Here keyspace_hits counts successful key lookups and keyspace_misses counts lookups that found nothing. A falling ratio combined with rising evictions usually means the working set no longer fits in memory.

How We Chose These Redis Monitoring Tools

We shortlisted tools from SaaSPodium’s Application Performance Management and Network Monitoring categories that document Redis support, and weighed deployment options, pricing type, alerting depth and fit for different team sizes. SaaSPodium listings currently carry no user ratings for these products.

Selection criteria were: Redis metric coverage, alerting and anomaly detection, correlation with application traces, deployment flexibility, and a free tier or open-source option. Integration lists change frequently, so confirm the Redis monitor against your version and topology (standalone, Sentinel or Cluster) during a trial.

1. ManageEngine Applications Manager: Redis alongside the rest of the stack

ManageEngine Applications Manager suits teams that want Redis metrics, host health and application dependencies in one console without adopting a full observability platform. It is a paid product with a broad catalog of database and server monitors.

Applications Manager monitors Redis next to web servers, databases and Java services, so a memory alert can be read in the context of the application that depends on it. Check the vendor’s current Redis monitor documentation for the exact metric list before you commit.

• Architecture: agentless polling of the Redis instance plus host monitors, deployable on-premises or in the cloud.
• Integrations: ticketing, chat and email alert channels, with threshold and anomaly-style alerting for key metrics.
• Pricing model: paid; SaaSPodium lists no public starting price, so request a quote or trial.

2. Datadog APM: Redis metrics tied to traces

Datadog is the strongest fit when your Redis traffic comes from microservices already instrumented for tracing. Its Redis integration collects server metrics, and traces show which service calls produce slow commands.

Datadog APM lists a starting price of $31 on SaaSPodium, as of October 2026, and bills by host and usage dimensions, so confirm current terms. The value for Redis is correlation: a rising eviction count lines up with the exact deploy and endpoint that caused it.

• Architecture: an agent on the host or sidecar collects Redis metrics and forwards them to the SaaS backend.
• Integrations: a large library of integrations across cloud services, containers and Kubernetes.
• Deployment: SaaS backend; the agent runs on Linux, Windows and in containers.

3. Dynatrace: automatic discovery for dynamic Redis fleets

Dynatrace fits enterprises running Redis in Kubernetes or autoscaling groups where instances appear and disappear. Its agent-based discovery maps dependencies automatically, which reduces manual dashboard upkeep.

Dynatrace uses its Davis AI engine for problem detection, which can group a Redis latency spike with the upstream services affected. Redis data is collected through its extension framework, so verify the current Redis extension and the metrics it covers during a proof of concept.

• Architecture: OneAgent plus extensions, with topology mapping across hosts, processes and services.
• Security and compliance: role-based access and audit features suited to regulated teams; confirm certifications on the vendor site.
• Pricing model: paid, usage-based; no public starting price in the SaaSPodium listing.

4. New Relic: a free tier to start with Redis dashboards

New Relic is a practical choice for small and mid-sized teams that want to try Redis monitoring without a procurement cycle, because it offers a freemium plan alongside paid usage-based tiers.

New Relic supports a Redis integration for infrastructure metrics and ties them to application traces. Free-tier limits change over time, so read the current plan page before relying on it for production alerting.

• Architecture: infrastructure agent with an on-host Redis integration, reporting to the SaaS platform.
• Integrations: alert destinations including chat, incident and ticketing tools.
• Pricing model: freemium, then usage-based paid tiers.

5. Elastic APM: Redis in the Elastic Stack

Elastic APM is the natural pick when logs, metrics and traces already live in Elasticsearch. Redis metrics arrive through Elastic’s Beats and Elastic Agent modules, so one query language covers everything.

Elastic APM is freemium, with a self-managed option and a hosted cloud service. Teams with search expertise gain flexible dashboards, though you take on cluster sizing and retention decisions if you self-host.

• Architecture: Elastic Agent or Metricbeat Redis module feeding Elasticsearch, visualized in Kibana.
• Integrations: works with the wider Elastic security and log analytics features.
• Deployment: self-managed or Elastic Cloud.

6. Splunk Observability: full-fidelity tracing around Redis

Splunk Observability targets organizations that need high-resolution traces and metrics streaming, with Redis monitored through the OpenTelemetry collector’s Redis receiver and correlated to service latency.

Splunk Observability is paid with no public starting price on SaaSPodium. Because it is built around OpenTelemetry, Redis telemetry stays portable if you later change backends.

• Architecture: OpenTelemetry collector with a Redis receiver sending to the Splunk back end.
• Integrations: connects with Splunk platform log analytics and incident response tools.
• Pricing model: paid, quote-based.

7. Paessler PRTG: sensor-based monitoring for Redis hosts

Paessler PRTG is a sensor-based monitor best known for network and server checks. For Redis, teams usually combine host sensors with custom scripts, so it suits IT operations teams that already use PRTG and want a basic Redis view.

PRTG Network Monitor is freemium, which lets you test the approach on a small number of sensors. Expect more setup work for deep Redis metrics than with a dedicated observability platform.

• Architecture: central core server with probes and sensors; custom sensors for application-specific metrics.
• Integrations: SNMP, WMI, flows and notification channels for common alerting tools.
• Deployment: on-premises Windows core, with a cloud option from the vendor.

8. Zabbix: open-source Redis templates and no license fee

Zabbix is the budget-conscious option. It is free and open source, and ships with Redis monitoring templates, so infrastructure teams can monitor Redis without paying per host.

Zabbix requires you to run and maintain its server and database, which trades license cost for engineering time. Its template and trigger system is flexible, which helps when you manage dozens of Redis nodes with the same alert rules.

• Architecture: server, database and agents or agentless checks; Redis templates for metrics and triggers.
• Security: encrypted agent communication and user permissions; you own hardening and patching.
• Pricing model: free and open source; paid support is available from the vendor.

How to Choose the Right Redis Monitoring Tool

Choose by team shape: pick a tracing platform if developers own Redis performance, an infrastructure monitor if operations does, and an open-source stack if license cost matters more than setup time. Always run a short proof of concept against production-like traffic.

• Startups and small teams: start with a freemium plan such as New Relic or PRTG.
• Microservice organizations: favor Datadog, Dynatrace or Splunk Observability for trace correlation.
• Platform teams with open-source preferences: Zabbix or Elastic keep costs predictable.
• Regulated industries: confirm data residency, access controls and audit logging before sending metrics to a SaaS back end.

If you monitor Redis as part of a broader cache strategy, our Application Performance Management category lists more options, and the Redis documentation explains each INFO field in detail.

Alerting Rules Worth Setting on Day One

Start with five alerts: memory above 80 percent of maxmemory, evictions above zero on a persistent dataset, hit ratio dropping below your baseline, replica offset lag, and slow commands above your latency budget. Tune thresholds after a week of data.

Alert on trends rather than single samples to avoid noise. For example, page the on-call engineer when evictions rise for five consecutive minutes, but send a ticket when the fragmentation ratio sits above 1.5 for a day. Document each alert with the first diagnostic step, such as inspecting the slow log or the largest keys.

Frequently Asked Questions

What is the best free tool to monitor Redis?
Zabbix is the strongest fully free option because it is open source and ships with Redis templates. New Relic, Elastic and PRTG offer freemium plans that suit small deployments, but check current plan limits before relying on them in production.

How do I monitor Redis memory usage?
Track used_memory against maxmemory and watch the fragmentation ratio and evicted_keys from the INFO command. A monitoring tool stores this history and alerts when memory approaches the limit, which the built-in commands cannot do on their own.

Can I use the Redis MONITOR command in production?
Avoid it on busy servers. MONITOR streams every command the server receives, which adds overhead and can reduce throughput. Use the slow log, latency monitor and an external monitoring tool to find problems with far less impact.