加(jiā )锁 同时队列可以(yǐ )无限长吗 什么(me )时候(hòu )消(xiāo )减(jiǎn ),同(tóng )时采(cǎi )用了(le )弱引用避免队列(liè )过大,造(zào )成(chéng )gc压力 源码(mǎ )如(rú )下get recycle scavenge每次都(dōu )是从(cóng )head节点获取,如果获取不到就next,这些(xiē )队列并不删(shān )除,jvm会自动(dòng )在内存不够(gòu )的时(shí )候删除
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