They said that Terracotta USES a non-API based byte code enhancement approach that works very well for solutions aiming for the data replication problem space.
A byte is the space needed to store one letter in the computer.
一字节就是计算机中需要储存一个字母所需的空间。
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The memory allocator must give you a 16-byte aligned block of space, because, in general, memory allocation must provide suitable alignment so that the memory can be used for any purpose.