PostgreSQL vs Redis: Key Differences & When to Use Each

Comprehensive side-by-side comparison of features, pricing, and metrics

Key Differences

Compare PostgreSQL and Redis across features, pricing, integrations, and community metrics. PostgreSQL / Redis.

Feature

PostgreSQL

Database

Redis

Database

Side-by-side comparison of developer tools
Advanced open source relational database
In-memory data structure store
GitHub Stars
⭐ 20,800
⭐ 74,123
Contributors
👥 58
👥 909
Pricing
✓ Free
Enterprise: Contact sales
✓ Free
Enterprise: Contact sales
Languages
C
C
Features
  • • Open Source
  • • database
  • • Cache
  • • Caching
  • • Database
  • • Distributed Systems
  • • In Memory
Integrations
  • • postgresql
  • • redis
Momentum Score
28/100 (stable)
89/100 (stable)
Community Health
19/100 (needs-attention)
81/100 (good)
Maturity Index
23/100 (experimental)
82/100 (established)
Innovation Score
18/100 (traditional)
91/100 (pioneering)
Risk Score (higher is safer)
14/100 (high)
68/100 (low)
Developer Experience
13/100 (poor)
68/100 (fair)
Links
🌐 Visit Website View on GitHub
🌐 Visit Website View on GitHub

PostgreSQL Strengths

Redis Strengths

  • ✓ More popular (74,123 stars)
  • ✓ Larger community (909 contributors)
  • ✓ More features (5 listed)

When to Use PostgreSQL vs Redis

Use PostgreSQL when its strengths align better with your stack and team needs, and choose Redis when its ecosystem, integrations, or cost profile is a better fit.

Related comparisons

PostgreSQL vs Elasticsearch → Redis vs Elasticsearch → PostgreSQL vs ClickHouse → Redis vs ClickHouse → PostgreSQL vs TiDB → Redis vs TiDB → PostgreSQL vs CockroachDB → Redis vs CockroachDB → PostgreSQL vs InfluxDB → Redis vs InfluxDB → PostgreSQL vs MongoDB → Redis vs MongoDB →

More Comparisons

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Data source: GitHub API

Last updated: 5/4/2026