加(jiā )锁(suǒ ) 同时队列可以(yǐ )无限(xiàn )长吗 什(shí )么时候消(xiāo )减(jiǎn ),同(tóng )时采(cǎi )用了弱引(yǐn )用避免队列(liè )过大(dà ),造成gc压(yā )力 源(yuán )码如(rú )下get recycle scavenge每(měi )次都是从head节(jiē )点获(huò )取,如果获取不到就(jiù )next,这些(xiē )队(duì )列并不(bú )删除,jvm会(huì )自动(dòng )在内存不(bú )够的时候删除
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