Class RefCountCacheHeader

src/iocore/hostdb/P_RefCountCache.h:364–374

The header for the cache, this is used to check if the serialized cache is compatible

// The header for the cache, this is used to check if the serialized cache is compatible
class RefCountCacheHeader
{
public:
  unsigned int      magic = REFCOUNTCACHE_MAGIC_NUMBER;
  ts::VersionNumber version{REFCOUNTCACHE_VERSION};
  ts::VersionNumber object_version; // version passed in of whatever it is we are caching

  RefCountCacheHeader(ts::VersionNumber object_version = ts::VersionNumber());
  bool operator==(RefCountCacheHeader const &that) const;
  bool compatible(RefCountCacheHeader *that) const;
};

// RefCountCache is a ref-counted key->value map to store classes that inherit from RefCountObj.
// Once an item is `put` into the cache, the cache will maintain a Ptr<> to that object until erase