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Databases · head to head

Instaclustr vs RisingWave

Instaclustr logo

Instaclustr

Databases

NetApp-owned managed service for Cassandra, Kafka, OpenSearch, PostgreSQL and Cadence with a bring-your-own-cloud model

From
On request
Rated
-
Full reviewWebsite
RisingWave logo

RisingWave

Databases

Streaming database that maintains incremental materialised views in SQL instead of Flink jobs

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only RisingWave has a free tier, so it costs nothing to try first.
  • Each has a real cost: Instaclustr pricing is only obtainable through a configurator or sales conversation, so comparing against AWS MSK or Confluent list prices requires several rounds of quotes rather than a spreadsheet.; RisingWave anything that does not fit SQL, such as custom windowing, complex event processing or heavy stateful logic, still needs Flink, so RisingWave often adds a system rather than removing one.
  • They diverge on capability: Instaclustr covers Unmodified open source, RisingWave covers SQL materialised views.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Instaclustr and RisingWave actually diverge.

Attributes where Instaclustr and RisingWave differ
AttributeInstaclustrRisingWave
Starting priceOn requestFree
Pricing modelquotePer RisingWave Unit hour
Free tierNoYes
PlatformsCloud, LinuxLinux, Docker, Kubernetes, Cloud

Identical on both: user rating (Not yet rated), category (Databases).

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 Instaclustr

  • Unmodified open source
  • Bring your own cloud
  • Multi technology platform
  • 24/7 operations
  • Managed backups
  • Terraform provider
  • SOC 2 and compliance
  • Consulting and support

Only in RisingWave

  • SQL materialised views
  • Postgres wire compatibility
  • Object storage state
  • Source connectors
  • Sink connectors
  • Iceberg tables
  • Watermarks and windowing
  • User defined functions

What people use each for

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

Instaclustr

  • An enterprise running Cassandra and Kafka that cannot hire and retain specialists for bothnot RisingWave
  • A company with cloud committed spend that wants managed data infrastructure to draw down that commitment through the bring-your-own-cloud modelnot RisingWave
  • A team that left Elastic over the licence change and wants OpenSearch operated by someone else without another proprietary forknot RisingWave
  • An organisation migrating off Amazon MSK or Keyspaces that wants the same open source software with vendor operations but portability intactnot RisingWave

RisingWave

  • A team with Kafka topics that needs continuously fresh aggregates for a dashboard without standing up a Flink clusternot Instaclustr
  • A fraud or risk team maintaining rolling counters and joins across event streams expressed as SQL viewsnot Instaclustr
  • A company doing Postgres CDC into a real-time denormalised view for search or servingnot Instaclustr
  • An analytics group that wants streaming results landed directly into Apache Iceberg without a separate writer jobnot Instaclustr

Where each one falls short

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

Instaclustr

  • Pricing is only obtainable through a configurator or sales conversation, so comparing against AWS MSK or Confluent list prices requires several rounds of quotes rather than a spreadsheet.
  • It manages infrastructure, not data modelling, so a poor Cassandra partition key or a mis-sized Kafka topic still causes outages that the managed service will not prevent.
  • NetApp ownership since 2022 has put the roadmap inside a large storage vendor, and the product is now one line in a portfolio rather than the whole company.
  • The catalogue is broad but each technology is served at a general level, so teams needing deep, vendor-specific tuning often find a specialist provider goes further on their one technology.
  • Bring your own cloud reduces lock-in but shifts networking, IAM and VPC peering complexity onto the customer, which needs cloud engineering capacity the managed service was meant to save.

RisingWave

  • Anything that does not fit SQL, such as custom windowing, complex event processing or heavy stateful logic, still needs Flink, so RisingWave often adds a system rather than removing one.
  • The Apache 2.0 community edition excludes premium features behind a licence key, and which capabilities sit on which side of that line moves between releases, so a self-hosted plan can be invalidated by an upgrade.
  • Long-running materialised views accumulate state in object storage, and cost and recovery time grow with retention in ways that are hard to forecast before you are in production.
  • The Postgres compatibility is protocol level; it is not a transactional Postgres and using it as a general purpose database, with point updates or high write concurrency, goes badly.
  • It is a comparatively young venture-funded project competing with Flink, Materialize and warehouse-native streaming, and the ecosystem of connectors, operators and third-party expertise is much thinner.

Pricing, plan by plan

Instaclustr

On request
  • Instaclustr Managed Platform$undefined/month
    • Priced per node size, technology, cloud provider and region
    • Interactive calculator requires configuration before a figure appears
    • Discounts on 12 month commitment

RisingWave

Free
  • Community EditionFree
    • Apache 2.0 licence, self-hosted
    • Core streaming engine and connectors
    • Premium features excluded and require a licence key
  • Cloud Basic$0.227/hour
    • Billed per RisingWave Unit hour
    • Hosted on AWS, GCP or Azure
    • Capped at 64 cores
  • Cloud Pro$undefined/year
    • No core limit
    • Bring your own cloud option
    • Premium features included
  • Self-managed Enterprise$undefined/year
    • On premises or Kubernetes
    • Premium features unlocked by licence
    • Annual contract with SLA

Which should you pick?

Choose Instaclustr if

  • You need unmodified open source.
  • You work on Cloud, Linux.
  • You also want bring your own cloud.
Instaclustr review

Choose RisingWave if

  • You need sql materialised views.
  • You want to start without paying.
  • You work on Linux, Docker, Kubernetes, Cloud.
  • You also want postgres wire compatibility.
RisingWave review

Questions people ask

Is Instaclustr or RisingWave better?
Neither clearly leads. Instaclustr starts at On request and RisingWave at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Instaclustr or RisingWave?
RisingWave has a free tier; the other does not. Paid plans start at On request for Instaclustr and Free for RisingWave.
Does Instaclustr or RisingWave run on more platforms?
Instaclustr runs on Cloud, Linux. RisingWave runs on Linux, Docker, Kubernetes, Cloud.
Can I use RisingWave for free?
Yes. RisingWave has a free tier, so you can try it without paying. Instaclustr starts at On request.
What is Instaclustr best used for?
Instaclustr is most often used for an enterprise running cassandra and kafka that cannot hire and retain specialists for both, a company with cloud committed spend that wants managed data infrastructure to draw down that commitment through the bring-your-own-cloud model, a team that left elastic over the licence change and wants opensearch operated by someone else without another proprietary fork, an organisation migrating off amazon msk or keyspaces that wants the same open source software with vendor operations but portability intact. Of those, an enterprise running cassandra and kafka that cannot hire and retain specialists for both and a company with cloud committed spend that wants managed data infrastructure to draw down that commitment through the bring-your-own-cloud model are not what RisingWave is typically brought in for.
What can Instaclustr do that RisingWave cannot?
Instaclustr covers Unmodified open source, Bring your own cloud, Multi technology platform, 24/7 operations. RisingWave covers SQL materialised views, Postgres wire compatibility, Object storage state, Source connectors.

Answered from the vendors’ own pages

Instaclustr: Does Instaclustr modify the open source software?

No. Its stated commitment is one hundred per cent open source with no proprietary extensions, which is the main reason licence-averse buyers choose it.

RisingWave: Is RisingWave open source?

The community edition is Apache 2.0 and self-hostable, but a set of premium features requires a paid licence key.

Instaclustr: Who owns Instaclustr?

NetApp, which acquired the company in 2022. It is now branded NetApp Instaclustr.

RisingWave: What does the cloud cost?

It starts at 0.227 US dollars per RisingWave Unit hour on the Basic tier, which is capped at 64 cores.

Instaclustr: Is pricing published?

No. There is an interactive calculator, but figures depend on technology, node size, cloud and region, and commitments are negotiated.

RisingWave: Does it replace Flink?

For SQL-expressible transformations, often yes. For custom stateful processing and complex event handling, no.

Instaclustr: Can clusters run in my own cloud account?

Yes, through the bring-your-own-cloud model, so the infrastructure spend also counts toward your cloud commitment.

RisingWave: Can I query it like Postgres?

Yes over the Postgres wire protocol, but it is an analytical streaming engine, not a transactional database.

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