Function validate

cachelib/cachebench/cache/components/RAMComponent.cpp:25–30

namespace facebook::cachelib::cachebench {
namespace {
void validate(const CacheConfig& config) {
  if (config.numPools > 1) {
    throw std::invalid_argument(
        "RAMCacheComponent does not support multiple pools");
  }
}

void setupConfig(LruAllocatorConfig& allocatorConfig,
                 RAMCacheComponent::PoolConfig& poolConfig,