加锁 同时队列可以(yǐ )无限长(zhǎng )吗 什么时(shí )候消(xiāo )减,同时(shí )采用了弱(ruò )引用(yòng )避免队列过大,造成gc压力 源码如(rú )下get recycle scavenge每(měi )次都是(shì )从(cóng )head节点(diǎn )获(huò )取,如果获取不到就next,这些(xiē )队(duì )列并(bìng )不删除(chú ),jvm会(huì )自(zì )动(dòng )在内存不够(gòu )的时(shí )候删(shān )除
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