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lease

8 articles · Page 1 of 1
samdeepthink
samdeepthink
Aug 3, 2026 · Backend Development

Is the Classic Update‑DB → Delete‑Cache → TTL Pattern Really the Best Way to Keep Cache Consistent?

The article examines why the common update‑database, delete‑cache, add‑TTL workflow can still produce permanent stale data under high concurrency, explains the underlying race conditions, and compares several alternative strategies—including delete‑first, binlog‑driven invalidation, and lease‑based approaches—to help engineers choose the most reliable and low‑complexity solution for cache consistency.

Cache AsideMySQLRedis
0 likes · 19 min read
Is the Classic Update‑DB → Delete‑Cache → TTL Pattern Really the Best Way to Keep Cache Consistent?
Rare Earth Juejin Tech Community
Rare Earth Juejin Tech Community
Jan 7, 2025 · Backend Development

Cache Consistency: Pitfalls of Delayed Double Delete and Lease/Versioning Solutions with Redis

This article examines why many large‑scale systems avoid the traditional delayed double‑delete cache‑invalidation strategy, explains its critical drawbacks, and presents alternative lease‑based and version‑based approaches with Lua scripts and Java wrappers for Redis to achieve stronger consistency.

Delayed Double DeleteLuaRedis
0 likes · 17 min read
Cache Consistency: Pitfalls of Delayed Double Delete and Lease/Versioning Solutions with Redis
System Architect Go
System Architect Go
Dec 26, 2023 · Cloud Native

Distributed Leader Election and Kubernetes Lease

Distributed leader election ensures a single node performs exclusive tasks in high‑availability systems, with common implementations like Etcd, Kafka, Elasticsearch, and Zookeeper using algorithms such as Paxos, Raft, and ZAB, while Kubernetes provides the Lease resource to manage leader election via a distributed lock.

GoPaxosdistributed systems
0 likes · 7 min read
Distributed Leader Election and Kubernetes Lease
Top Architect
Top Architect
Sep 26, 2021 · Fundamentals

Fundamentals of Distributed Systems: Concepts, Replication, Consistency, and Protocols

This article provides a comprehensive overview of distributed system fundamentals, covering system models, node concepts, failure types, replication strategies, consistency levels, data distribution methods, replica control protocols such as primary‑secondary, two‑phase commit, lease‑based caching, quorum, MVCC, Paxos, and the CAP theorem.

consistencydistributed systemslease
0 likes · 54 min read
Fundamentals of Distributed Systems: Concepts, Replication, Consistency, and Protocols
Architects' Tech Alliance
Architects' Tech Alliance
Jul 18, 2021 · Fundamentals

Fundamentals of Distributed Systems: Concepts, Replication, Consistency, and Core Protocols

This article provides a comprehensive overview of distributed system fundamentals, covering system models, replicas, performance and availability metrics, data distribution strategies, replica protocols such as lease, quorum, two‑phase commit, MVCC, Paxos, and the CAP theorem, with practical engineering considerations.

CAP theoremPaxosconsistency
0 likes · 53 min read
Fundamentals of Distributed Systems: Concepts, Replication, Consistency, and Core Protocols
Top Architect
Top Architect
Apr 24, 2021 · Fundamentals

Fundamentals of Distributed Systems: Models, Replication, Consistency, and Core Protocols

This article provides a comprehensive overview of distributed system fundamentals, covering node models, replica concepts, various consistency levels, data distribution strategies, lease-based caching, quorum mechanisms, two‑phase commit, MVCC, Paxos consensus, and the CAP theorem, illustrating each with practical examples and diagrams.

CAP theoremConsensusPaxos
0 likes · 54 min read
Fundamentals of Distributed Systems: Models, Replication, Consistency, and Core Protocols
Big Data Technology Architecture
Big Data Technology Architecture
Aug 13, 2019 · Fundamentals

Fundamentals of Distributed Systems: Models, Replicas, Consistency, and Protocols

This article introduces core concepts of distributed systems, covering node models, replica types, consistency levels, data distribution strategies, lease and quorum mechanisms, logging techniques, two‑phase commit, MVCC, Paxos, and the CAP theorem, providing a comprehensive overview for engineers and researchers.

CAP theoremleaseprotocols
0 likes · 53 min read
Fundamentals of Distributed Systems: Models, Replicas, Consistency, and Protocols