加锁 同时(shí )队列(liè )可以(yǐ )无限(xiàn )长吗 什么(me )时候(hòu )消(xiāo )减,同时(shí )采用了弱引用避(bì )免队(duì )列(liè )过大,造(zào )成(chéng )gc压力(lì ) 源码如(rú )下get recycle scavenge每(měi )次(cì )都是(shì )从head节点获取(qǔ ),如果获取不到就next,这些队(duì )列(liè )并不删除(chú ),jvm会自动在内存不(bú )够的时(shí )候删除
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