tag: consistency
articles: 3 · beats: 1
latest: September 1, 2026
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Consistency
3 Crashtech articles on Consistency, filed under System Design, published between July 2026 and September 2026. Every piece is full-text HTML with sources, structured data and an authored FAQ.
All 3 sit in the System Design beat. System Design
Database Replication Explained: Single-Leader, Multi-Leader, and Leaderless
What replication lag actually breaks, and how single-leader, multi-leader, and leaderless models trade off consistency for availability.
The CAP Theorem Is Not a Menu
Network partitions force a hard choice: refuse writes (CP) or accept and diverge (AP). Why the two-of-three myth is wrong, and what PACELC really tells us.
Vector Clocks: Detecting Causality in Distributed Systems
Vector clocks solve distributed ordering: when wall-clock timestamps fail to detect concurrent writes, vector clocks reveal true causality and conflicts.
Questions we answer about Consistency
- Why do databases replicate data instead of just running on one powerful machine?
- What is replication lag and why does it matter?
- What's the difference between single-leader and multi-leader replication?
- What is split-brain, and why is it dangerous in a replicated database?
- Why would a system choose leaderless replication over single-leader?
- Can I pick two out of three in CAP theorem?
- What is a network partition?
- What does consistency mean in CAP?
- Why do databases like DynamoDB and Cassandra choose AP?
- How does PACELC relate to CAP?
Covered alongside
Frequently asked questions
What does Crashtech publish about Consistency?
3 articles tagged Consistency, the most recent published September 1, 2026. All 3 sit in the System Design beat. Each carries numbered sources, an authored FAQ and full structured data.
What questions about Consistency does Crashtech answer directly?
10 questions have a dedicated answer page under this tag, including “Why do databases replicate data instead of just running on one powerful machine?”. Each answer is authored prose from the article it belongs to, not a generated summary.
Can AI assistants read Crashtech's Consistency coverage?
Yes. Crashtech serves full static HTML to every crawler, allows all major AI user agents in robots.txt, and publishes an llms.txt manifest plus a full-text corpus, so assistants can retrieve and cite these articles directly.