Memcached vs RocksDB:Which is more popular?
In September 2026, Memcached and RocksDB were level in searches among key value stores worldwide, with an estimated 9.9K branded searches each, at 1.3% of the total each. When we asked ChatGPT and Google AI Overviews about key value stores, RocksDB appeared in three of the five answers and Memcached in one. RocksDB was mentioned before Memcached in three out of four answers.
Who do people search for more?
Memcached and RocksDB are searched for about as often as each other.
Who does AI mention more?
RocksDB, mentioned in 3 of 5 answers, Memcached in 1
Who does AI recommend more?
RocksDB, named ahead of Memcached in 3 of 4 answers
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Top key value stores in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, RocksDB was mentioned in three out of five: in all three ChatGPT answers, but not in either of the two Google AI Overviews. Memcached was mentioned in one out of five: not in any of the three ChatGPT answers, but in one of the two Google AI Overviews. RocksDB was listed before Memcached in three out of four answers.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
Redis5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
DynamoDB4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Aerospike4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Valkey3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers- RocksDB3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
etcd2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers- FoundationDB2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- Memcached1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
See every answer about key value stores
5 answers
Asked ChatGPT
“Which key value store should I use?”
Asked ChatGPT
“What are the best key value stores?”
Asked ChatGPT
“What's the best key value store for fast data lookup?”
Searched Google, AI Overview
“key value stores”
Searched Google, AI Overview
“in-memory database”
Brands are shown in the order each answer named them. The survey took place in the United States on October 21, 2026.
Is Memcached or RocksDB more popular in search?
This chart shows how often people search Google for Memcached and RocksDB by name. Each line represents a brand's share of searches for all eight key value stores we track, month by month, from English-language searches worldwide.
Share of searches by month for Memcached, RocksDB. The figures are in the table below the chart.
View monthly share of searches table
| Month | Valkey | Redis | DynamoDB | etcd | Aerospike | Memcached | RocksDB | FoundationDB |
|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 46.4% | 32.9% | 13.9% | 1.9% | 1% | 1.9% | 1.5% | 0.45% |
| Nov 2025 | 54% | 31.7% | 7.3% | 1.8% | 1.2% | 2.2% | 1.5% | 0.43% |
| Dec 2025 | 58% | 28.2% | 6.4% | 1.9% | 1.6% | 1.9% | 1.6% | 0.46% |
| Jan 2026 | 54.8% | 32.2% | 6% | 1.8% | 1.5% | 1.8% | 1.5% | 0.44% |
| Feb 2026 | 49.8% | 35.8% | 6.7% | 2% | 1.6% | 2% | 1.6% | 0.39% |
| Mar 2026 | 49.4% | 36% | 6.6% | 2.4% | 1.3% | 2% | 1.6% | 0.59% |
| Apr 2026 | 50.6% | 36.3% | 5.6% | 2% | 1.7% | 1.7% | 1.7% | 0.49% |
| May 2026 | 50.6% | 36.3% | 5.6% | 2% | 1.7% | 1.7% | 1.7% | 0.49% |
| Jun 2026 | 54.6% | 32.5% | 6% | 1.8% | 1.5% | 1.8% | 1.5% | 0.43% |
| Jul 2026 | 57.4% | 29.2% | 6.3% | 1.9% | 1.5% | 1.5% | 1.5% | 0.56% |
| Aug 2026 | 59.4% | 29.5% | 5.3% | 1.6% | 1.1% | 1.3% | 1.3% | 0.48% |
| Sep 2026 | 59.5% | 29% | 5.4% | 1.6% | 1.3% | 1.3% | 1.3% | 0.58% |
How has the Memcached and RocksDB comparison changed over the last 12 months?
3 findings
- Memcached was ahead of RocksDB in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Memcached’s share of searches among key value stores worldwide moved from 1.9% to 1.3%, and its estimated monthly branded searches moved from 18.1K to 9.9K.
- Across the 12 months ending September 2026, RocksDB’s share of searches among key value stores worldwide moved from 1.5% to 1.3%, and its estimated monthly branded searches moved from 14.8K to 9.9K.
How did search popularity change for key value stores worldwide in September 2026?
2 changes
In September 2026, Memcached fell from 5th to 6th among key value stores worldwide.
In September 2026, RocksDB fell from 6th to 7th among key value stores worldwide.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using Memcached’s and RocksDB’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
Other head-to-heads among key value stores
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