Are there any limitations on cache memory volume?

Cache size limitations depend on several factors:

• Hardware resources: the amount of available RAM and system architecture limit the maximum cache size.
• JVM settings: Java application startup parameters (e.g., -Xmx) limit the total memory, including cache.
• Type of cache and its implementation: some caches (e.g., based on ConcurrentHashMap) may have size restrictions set in the code.
• Eviction policies: to prevent memory overflow, caches typically implement strategies for removing old or infrequently used data (LRU, LFU, etc.).

Thus, cache size limitations are a combination of hardware capabilities, JVM configuration, and cache logic. It is important to balance the cache size to avoid OutOfMemoryError and ensure efficient application performance.