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Software · head to head

Cloudflare vs ELK Stack

Cloudflare logo

Cloudflare

Software

The web performance and security company

From
Free
Rated
-
Full reviewWebsite
ELK Stack logo

ELK Stack

Software

Open Source Search and Log Analytics

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Cloudflare free tier limited to basic features (no advanced analytics or premium features); ELK Stack the free Basic self managed subscription excludes machine learning, alerting, single sign on via SAML or OpenID Connect, LDAP and Active Directory authentication, field and document level security, searchable snapshots and cross cluster replication
  • They diverge on capability: Cloudflare covers Global CDN, ELK Stack covers Full-text search.

Where they differ

Only the attributes on which Cloudflare and ELK Stack actually diverge.

Attributes where Cloudflare and ELK Stack differ
AttributeCloudflareELK Stack
Pricing modelUnknownopen-source
PlatformsWebWeb, Api
Founded20092011

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

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 Cloudflare

  • Global CDN
  • DDoS Protection
  • WAF
  • DNS
  • SSL/TLS
  • Load Balancing
  • Bot Management
  • Workers (Serverless)

Only in ELK Stack

  • Full-text search
  • Data visualization
  • Log aggregation
  • Time-series analytics
  • API
  • Webhooks
  • REST

Both cover

  • Web support
  • Api support

What people use each for

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

Cloudflare

  • Global content delivery network (CDN) with 330+ data centres worldwidenot ELK Stack
  • DDoS protection and bot blockingnot ELK Stack
  • Web application security and rate limitingnot ELK Stack
  • DNS management and domain protectionnot ELK Stack
  • Static and dynamic content cachingnot ELK Stack
  • Serverless computing via Cloudflare Workersnot ELK Stack
  • Database and storage services (D1, R2)not ELK Stack
  • Performance optimisation for Core Web Vitalsnot ELK Stack

ELK Stack

  • Centralised log search and analytics over Elasticsearchnot Cloudflare
  • Dashboards and visualisation of machine data in Kibananot Cloudflare
  • Self managing a search and observability cluster on your own hardwarenot Cloudflare

Where each one falls short

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

Cloudflare

  • Free tier limited to basic features (no advanced analytics or premium features)
  • Pro tier ($20-25/month) caps at professional websites (higher tiers needed for enterprise scale)
  • Caches only anonymous API GET responses (authenticated requests and non-GET methods not cached)
  • Geographic coverage limited to announced 330+ cities (may not cover all regions globally)

ELK Stack

  • The free Basic self managed subscription excludes machine learning, alerting, single sign on via SAML or OpenID Connect, LDAP and Active Directory authentication, field and document level security, searchable snapshots and cross cluster replication
  • Cross cluster operations require the same subscription tier on every cluster involved
  • The 99.95 percent monthly uptime SLA applies only to the Platinum and Enterprise subscription tiers
  • Three deployment models are priced on three different bases: resource based for Cloud Hosted, usage based for Serverless and licence based on nodes and RAM for self managed
  • Elastic Cloud Serverless does not yet support traffic filtering, cross project search or bring your own key
  • The pricing page publishes no rate for any tier

Pricing, plan by plan

Cloudflare

Free

No published plan breakdown. See the Cloudflare review.

ELK Stack

Free
  • FreeFree
    • Full-text search
    • Data visualization
    • Log aggregation

Which should you pick?

Choose Cloudflare if

  • You need global cdn.
  • You want to start without paying.
  • You also want ddos protection.
Cloudflare review

Choose ELK Stack if

  • You need full-text search.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want data visualization.
ELK Stack review

Questions people ask

Is Cloudflare or ELK Stack better?
Neither clearly leads. Cloudflare starts at Free and ELK Stack at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cloudflare or ELK Stack?
Cloudflare starts at Free and ELK Stack at Free.
Does Cloudflare or ELK Stack run on more platforms?
Cloudflare runs on Web. ELK Stack runs on Web, Api.
Can I use Cloudflare for free?
Both have a free tier, so you can try either at no cost before committing.
What is Cloudflare best used for?
Cloudflare is most often used for global content delivery network (cdn) with 330+ data centres worldwide, ddos protection and bot blocking, web application security and rate limiting, dns management and domain protection. Of those, global content delivery network (cdn) with 330+ data centres worldwide and ddos protection and bot blocking are not what ELK Stack is typically brought in for.
What can Cloudflare do that ELK Stack cannot?
Cloudflare covers Global CDN, DDoS Protection, WAF, DNS. ELK Stack covers Full-text search, Data visualization, Log aggregation, Time-series analytics. Both handle Web support, Api support.
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