Softwr

Log Management · head to head

InfluxDB vs Splunk

InfluxDB logo

InfluxDB

Log Management

Purpose-built time series database for metrics and events

From
Free
Rated
-
Full reviewWebsite
Splunk logo

Splunk

Network & Connectivity

Turn Data Into Doing

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: InfluxDB high-cardinality data causes memory pressure and performance degradation; Splunk no prices are published on any plan; every model requires contacting sales for an estimate
  • They diverge on capability: InfluxDB covers Time-series Storage, Splunk covers Log aggregation.

Where they differ

Only the attributes on which InfluxDB and Splunk actually diverge.

Attributes where InfluxDB and Splunk differ
AttributeInfluxDBSplunk
Pricing modelUnknownusage-based
PlatformsCloud, Docker, Linux, macOS, Windows, AWS, Google Cloud, AzureWeb, Api
CategoryLog ManagementNetwork & Connectivity
Founded20122003

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in InfluxDB

  • Time-series Storage
  • Flux Query Language
  • High Write Throughput
  • Data Compression
  • Retention Policies
  • Continuous Queries
  • Built-in Dashboards
  • Telegraf

Only in Splunk

  • Log aggregation
  • Real-time monitoring
  • Data visualization
  • Full-text search
  • Custom dashboards
  • Alert management
  • Anomaly detection
  • Log parsing

Both cover

  • Web support

What people use each for

The jobs each tool is most often brought in to do.

InfluxDB

  • Monitoringnot Splunk
  • IoT datanot Splunk
  • Financial datanot Splunk
  • Log analyticsnot Splunk
  • Observabilitynot Splunk

Splunk

  • Log search and analysis across infrastructurenot InfluxDB
  • SIEM, SOAR and UEBA for a security operations teamnot InfluxDB
  • Application performance and infrastructure monitoringnot InfluxDB
  • Cloud, private cloud or on-premises deploymentnot InfluxDB

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

InfluxDB

  • High-cardinality data causes memory pressure and performance degradation
  • No support for joins or transactions like relational databases
  • Queries limited to 72-hour window in InfluxDB 3 OSS Core
  • Clustering and authentication features absent from community version

Splunk

  • No prices are published on any plan; every model requires contacting sales for an estimate
  • Three separate pricing models, workload, ingest and entity, so the same deployment costs different amounts depending on which was signed
  • Ingest pricing bills on data volume, so cost tracks how much you log rather than how much value you get from it
  • Security, observability and platform are priced separately

Pricing, plan by plan

InfluxDB

Free
  • Cloud Serverless FreeFree
    • 5 MB writes per 5 minutes
    • 300 MB queries per 5 minutes
    • 30 day retention
  • Cloud Serverless Usage-Based$null/mo
    • 0.0025 USD per MB ingested
    • 0.012 USD per 100 queries
    • 0.002 USD per GB-hour storage

Splunk

Free
  • FreeFree
    • Log aggregation
    • Real-time monitoring
    • Data visualization

Which should you pick?

Choose InfluxDB if

  • You need time-series storage.
  • You want to start without paying.
  • You work on Cloud, Docker, Linux, macOS, Windows, AWS, Google Cloud, Azure.
  • You also want flux query language.
InfluxDB review

Choose Splunk if

  • You need log aggregation.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want real-time monitoring.
Splunk review

Questions people ask

Is InfluxDB or Splunk better?
Neither clearly leads. InfluxDB starts at Free and Splunk at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, InfluxDB or Splunk?
InfluxDB starts at Free and Splunk at Free.
Does InfluxDB or Splunk run on more platforms?
InfluxDB runs on Cloud, Docker, Linux, macOS, Windows, AWS, Google Cloud, Azure. Splunk runs on Web, Api.
Can I use InfluxDB for free?
Both have a free tier, so you can try either at no cost before committing.
What is InfluxDB best used for?
InfluxDB is most often used for monitoring, iot data, financial data, log analytics. Of those, monitoring and iot data are not what Splunk is typically brought in for.
What can InfluxDB do that Splunk cannot?
InfluxDB covers Time-series Storage, Flux Query Language, High Write Throughput, Data Compression. Splunk covers Log aggregation, Real-time monitoring, Data visualization, Full-text search. Both handle Web support.

Answered from the vendors’ own pages

InfluxDB: Is there a free tier and what are the limits?

InfluxDB 3 Core OSS is free forever for local development and prototyping. Cloud Serverless free tier includes 5 MB writes per 5 minutes, 300 MB queries per 5 minutes, 30 day retention, and 2 databases.

Source
InfluxDB: Can I self-host InfluxDB?

Yes, InfluxDB 3 Core is fully open source and can be self-hosted with no license required. InfluxDB 3 Enterprise is self-managed and includes a 30-day free trial.

Source
InfluxDB: What are the series cardinality limitations?

InfluxDB is sensitive to high-cardinality data. High cardinality increases RAM usage and can trigger out-of-memory errors, making it unsuitable for some workloads with many unique tag combinations.

Source
InfluxDB: Does InfluxDB support SQL queries?

InfluxDB has limited SQL support. Full SQL is available in InfluxDB 3, but earlier versions support only specific SQL commands and use InfluxQL as the primary query language.

Source
InfluxDB: Can I export my data from InfluxDB?

Yes, data can be exported from InfluxDB using query results. However, the process and supported formats depend on the version and deployment type you are using.

Source
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Related pages

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