The 5 Types of Database Every Company Uses
Every modern company from Amazon to Netflix relies on the same core database types. In this video, we break down the 5 databases every company uses with quick definitions and common tech examples.
Databases Covered:
OLTP (Online Transaction Processing): Handles day-to-day app transactions quickly and reliably.
Common tech: PostgreSQL, MySQL, Microsoft SQL Server, DynamoDB.
OLAP (Online Analytical Processing / Data Warehouse): Analyzes massive historical datasets for insights.
Common tech: Snowflake, Amazon Redshift, Google BigQuery.
Caching Layer: Stores frequently accessed data in memory for microsecond access times.
Common tech: Redis, Memcached.
Search Databases: Optimized for fast, full-text search and relevance ranking.
Common tech: Elasticsearch, OpenSearch, Algolia.
Key-Value / NoSQL Databases – Ultra-fast lookups with flexible schema at massive scale.
Common tech: Amazon DynamoDB, Apache Cassandra, Riak KV.
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-- Video Content --
0:00 - Intro
0:24 - OLTP
1:12 - OLAP
2:29 - Cache
3:38 - CAP
4:36 - Key-Value