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Developers ask AI: What's the best in-memory database for caching?

Representative prompt — one of many ways developers ask this question

Redis maintains its top spot from last month. Dragonfly (up 1 from #4) rounds out the top three, taking the spot previously held by Hazelcast.

The biggest mover is GigaSpaces, jumping 14 spots from #30 to #16. Azure Cache for Redis had the steepest drop, falling 5 positions from #12 to #17.

Updated October 2026 Compared to September 2026

Rank Ordered by prominence across all models, compared to September 2026. Product Company or product name that appeared in model responses for this category. Prominence Prominence (1–100) weights how often a product is ranked ahead of others. Hover a score for average position and visibility. Models Per-model prominence. Ring fill shows each model's prominence score. Hover a dot for prominence, average position, and visibility.
1 — 100
Gemini OpenAI Claude
2 — 83
Gemini OpenAI Claude
3 ▲1 82
Gemini OpenAI Claude
4 ▼1 80
Gemini OpenAI Claude
5 ▲1
Amazon Web Services
72
Gemini OpenAI Claude
6 ▲1
GridGain Systems
68
Gemini OpenAI Claude
7 ▼2 64
Gemini OpenAI Claude
8 — 60
Gemini OpenAI Claude
9 ▲1
Linux Foundation
59
Gemini OpenAI Claude
10 ▲1 54
Gemini OpenAI Claude
ALSO RANKED
11 ▼2 49
Gemini OpenAI Claude
12 ▲2
Snap Inc.
43
Gemini OpenAI Claude
13 ▲5
Microsoft
43
Gemini OpenAI Claude
14 ▲3
Apache Software Foundation
38
Gemini OpenAI Claude
15 — 33
Gemini OpenAI Claude
16 ▲14 30
Gemini OpenAI Claude
17 ▼5
Microsoft Azure
30
Gemini OpenAI Claude
18 ▼5
Google Cloud
17
Gemini OpenAI Claude
19 ▼3
Oracle
15
Gemini OpenAI Claude

Also tracked

Microsoft Azure

These products appeared in at least one model response but did not meet the threshold to rank. This is not a comprehensive list. Many factors influence whether a product appears in AI-generated results. Rankings reflect AI model behavior at time of testing. Appearance or absence does not constitute an endorsement or evaluation by LLM Rank.

These rankings reflect a snapshot from October 2026 compared to September 2026. Model updates between snapshots: OpenAI (GPT-5.6 → GPT-6.1); Anthropic (Claude Opus 5 → Claude Opus 5.5). See the full changelog →

Top 10 over time

October 2026

How standings changed across April 2026 → May 2026 → June 2026 → July 2026 → August 2026 → September 2026 → October 2026. Hover a point or product name for details.

Dashed lines = months outside the top 10.

The top Memory DB tools, according to…

October 2026 · top 5 per model
Gemini
Gemini Gemini 3.1
  1. 1
    Redis 100
    pos 1.0 · vis 100%
  2. 2
    pos 2.4 · vis 100%
  3. 3
    pos 2.8 · vis 100%
  4. 4
    pos 5.3 · vis 100%
  5. 5
    pos 5.3 · vis 100%
OpenAI
OpenAI GPT-6.1
  1. 1
    Redis 100
    pos 1.0 · vis 100%
  2. 2
    pos 2.4 · vis 100%
  3. 3
    pos 3.6 · vis 100%
  4. 4
    pos 4.6 · vis 100%
  5. 5
    pos 6.4 · vis 90%
Claude
Claude Claude Opus 5.5
  1. 1
    Redis 100
    pos 1.0 · vis 100%
  2. 2
    Valkey 89
    pos 2.3 · vis 100%
  3. 3
    pos 2.7 · vis 100%
  4. 4
    pos 4.1 · vis 100%
  5. 5
    pos 5.6 · vis 100%

Memory DB developers also ask about…

What are the best open-source in-memory databases? Representative prompt — one of several specialized views within Memory DB

Rankings for a specialized prompt within Memory DB.

Updated October 2026

Rank Ordered by prominence across all models. Product Company or product name that appeared in model responses for this category. Prominence Prominence (1–100) weights how often a product is ranked ahead of others. Hover a score for average position and visibility. Models Per-model prominence. Ring fill shows each model's prominence score. Hover a dot for prominence, average position, and visibility.
1
Redis 1
100
Gemini OpenAI Claude
2 82
Gemini OpenAI Claude
3
GridGain Systems
74
Gemini OpenAI Claude
4 70
Gemini OpenAI Claude
5
Valkey 9
Linux Foundation
68
Gemini OpenAI Claude
6
KeyDB 12
Snap Inc.
64
Gemini OpenAI Claude
7 64
Gemini OpenAI Claude
8 63
Gemini OpenAI Claude
9 56
Gemini OpenAI Claude
10
Apache Software Foundation
51
Gemini OpenAI Claude

Full report & dataset

Need to work with this data?

Complete per-model results and every individual model run in a spreadsheet, a PDF for citing with a written read on what moved.

In the October 2026 export

  • 43 ranked products
  • 3 models ranked in full
  • 120 runs, with verbatim replies
  • 3 prompt variants scored

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