Why was Caffeine chosen as the L1 cache instead of Guava?

Caffeine was chosen as the L1 cache instead of Guava for several reasons:

• Performance: Caffeine uses modern algorithms (e.g., Window TinyLFU) that provide higher throughput and lower latency compared to Guava.
• Memory management: Caffeine manages memory more efficiently and reduces garbage collection, which is critical for high-load systems.
• Flexibility and extensibility: Caffeine offers more fine-tuned settings and advanced cache configuration options.

Thus, Caffeine provides a more efficient and modern caching mechanism, which is especially important for L1 cache where access speed and minimal system load are crucial.