加锁 同时队列可以(yǐ )无限长(zhǎng )吗 什(shí )么时候(hòu )消减(jiǎn ),同(tóng )时采用(yòng )了弱引用(yòng )避(bì )免队(duì )列(liè )过大,造(zào )成(chéng )gc压力 源码如下(xià )get recycle scavenge每次都是从(cóng )head节点获取(qǔ ),如果获取不(bú )到就next,这(zhè )些队列(liè )并不删除,jvm会自动在内存(cún )不够的(de )时(shí )候(hòu )删除
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