September 2023 Summaries

This blog post discusses three major problems in cache management: Cache Penetration, Cache Breakdown, and Cache Avalanche. It provides best practices to address these issues, such as caching empty results, using Bloom Filters, implementing the Refresh-Ahead caching strategy, employing expiration time jitter, and ensuring high availability. The post also highlights Dragonfly's LFRU eviction policy and its compatibility with Redis Sentinel for maintaining high availability in caching layers.

Open source development has been a driving force for innovation, but its sustainability is now under question as companies face challenges protecting their business models against unfair competition. The Business Source License (BSL) model emerges as a potential solution to this issue by striking a balance between sharing code and ensuring the sustainability of businesses. Unlike traditional licenses that may limit usage or foster unfair competition, BSL allows for free use of software while restricting direct commercial competition. This approach fosters open innovation and encourages more companies to make their innovations open, ultimately benefiting the developer community.