加(jiā )锁 同时队列(liè )可(kě )以(yǐ )无限(xiàn )长(zhǎng )吗 什(shí )么时候消(xiāo )减(jiǎn ),同时采(cǎi )用(yòng )了弱引用避(bì )免队列(liè )过(guò )大,造成gc压力 源码(mǎ )如(rú )下get recycle scavenge每次都是(shì )从head节点获(huò )取,如(rú )果(guǒ )获取(qǔ )不(bú )到就next,这些队(duì )列并不删除,jvm会自动(dòng )在(zài )内(nèi )存不够的时(shí )候删除
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