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Head-to-head · In-Memory Databases

Aerospike Database vs eXtremeDB

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Aerospike Database #4 in In-Memory Databases 8.8/10 Free plan Free plan✓ 0 of 4 features Visit Aerospike
eXtremeDB #7 in In-Memory Databases 8.5/10 Pricing on request · 60-day trial Free trial✓ 4 of 4 features Visit McObject

Aerospike Database leads on 0 checks, eXtremeDB on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreAerospike Database · 8.8/10
  • Free planonly Aerospike Database
  • Free trialonly eXtremeDB
  • Most featureseXtremeDB · 4 of 4

Aerospike Database scores higher on our rubric for in-memory databases: 8.8 against 8.5 out of 10; our editors rank them #4 and #7.

Aerospike Database is the better fit for high-scale distributed key-value workloads. eXtremeDB is the better fit for embedded and edge applications needing durability.

  • Aerospike Database fits best

    High-scale distributed key-value workloads

  • eXtremeDB fits best

    Embedded and edge applications needing durability

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Aerospike Database 8.8/10 Visit ↗ eXtremeDB 8.5/10 Visit ↗
At a glance
Editor score 8.8 8.5
Ranking #4 in In-Memory Databases #7 in In-Memory Databases
Best for High-scale distributed key-value workloads Embedded and edge applications needing durability
Pricing model Free plan + paid Paid
Starting price — Pricing on request · 60-day trial
Free plan ✓ (best) Not checked yet
Free trial — 60 days
Deployment Cloud, Self-hosted Cloud, Self-hosted
Support Tickets, Community, Docs · 24/7 Email, Phone, Docs
Built for Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Aerospike Database 0/4 · eXtremeDB 4/4
Data persistence Not checked yet ✓ (best)
High availability Not checked yet ✓ (best)
SQL support Not checked yet ✓ (best)
Vector search Not checked yet ✓ (best)
Specs
Deployment Not checked yet Both
Included memory Not checked yet Not checked yet
Supported data models Not checked yet relational SQL, object-based/native, row-oriented, columnar time-series, in-memory, persistent, hybrid
Our review
Pros
  • Strong consistency, distributed transactions, and automatic failover
  • Supports in-memory, hybrid memory/flash, all-flash, and block storage
  • Cross-datacenter replication through XDR and synchronous cluster replication
  • Supports in-memory, persistent, and hybrid storage modes
  • Combines replication, failover, clustering, and distributed queries
  • Offers SQL, native APIs, vector indexes, and time-series layouts
Cons
  • Community Edition is limited to 8-node clusters
  • Community Edition supports up to 2.5 TB of data
  • Enterprise Edition pricing requires contacting Aerospike
  • Pricing requires contacting McObject's sales team
  • The 60-day offer is an evaluation trial, not a perpetual free plan
  • Its broad feature set may exceed the needs of simple embedded applications
Our verdict

Aerospike Database is a distributed NoSQL database for enterprises building real-time applications with demanding latency, throughput, and scale requirements. It supports key-value, document, and graph data models through a common database…

Read the review →

eXtremeDB is an embedded database management system for professional developers building resource-constrained, real-time, IoT, networking, financial, and high-performance computing applications. It supports embedded and client/server…

Read the review →
  1. Aerospike DatabaseIn-Memory Databases 8.8Free plan
  2. eXtremeDBIn-Memory Databases 8.5Pricing on request · 60-day trial

Strengths and trade-offs

  • Aerospike Database — where it wins

    • Strong consistency, distributed transactions, and automatic failover
    • Supports in-memory, hybrid memory/flash, all-flash, and block storage
    • Cross-datacenter replication through XDR and synchronous cluster replication

    Where it doesn't

    • Community Edition is limited to 8-node clusters
    • Community Edition supports up to 2.5 TB of data
    • Enterprise Edition pricing requires contacting Aerospike

  • eXtremeDB — where it wins

    • Supports in-memory, persistent, and hybrid storage modes
    • Combines replication, failover, clustering, and distributed queries
    • Offers SQL, native APIs, vector indexes, and time-series layouts

    Where it doesn't

    • Pricing requires contacting McObject's sales team
    • The 60-day offer is an evaluation trial, not a perpetual free plan
    • Its broad feature set may exceed the needs of simple embedded applications
  • Aerospike Database8.8/10 · Free plan

    A distributed database for demanding real-time workloads, with broad storage and replication options.

    Visit AerospikeFull verdict →
  • eXtremeDB8.5/10 · Pricing on request · 60-day trial

    A broad embedded database for durable, real-time, and distributed workloads.

    Visit McObjectFull verdict →

More comparisons

All In-Memory databases comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update