Infinispan数据逐出 [英] Infinispan data eviction

问题描述

我使用infinispan缓存版本5.1.6.FINA.我已经配置了命名缓存:

I use infinispan cache version 5.1.6.FINA. I have configured named cache:

<namedCache name="cacheName">
    <locking lockAcquisitionTimeout="5000" />
    <eviction maxEntries="10" strategy="NONE" />
    <expiration lifespan="-1" maxIdle="-1" />
</namedCache>

我用它仅将一些数据存储在内存中.我在创建缓存的过程中使用了此配置，缓存中的键为 Long ，值为 String ，并且在那里仅保留4个元素，始终仅包含4个元素.为此，我对4个键进行了硬编码:1L，2L，3L，4L，有时只是更改这些元素的值.

I use it to store some data in memory only. I use this configuration during creating cache where key is Long and value is String and hold there only 4 elements always only 4. For this purpose I have hardcoded 4 keys: 1L, 2L, 3L, 4L and sometimes just change values of those elements.

如果缓存中包含2个元素，它们分别包含键1L和2L以及一些值，而我尝试将其他两个值与其键值相加，则它们将相互重播.因此，结果缓存仅包含3个元素，其键为1L，2L，3L或1L，2L，4L.我试图更改迁离策略，但无济于事.另外，我可以说这是本地环境，不是集群.

If cache holds 2 elements with key 1L and 2L and some values and I try to add other two with his values, they replays each other. So as a result cache holds just 3 element with keys 1L, 2L, 3L or 1L, 2L, 4L. I've tried to change eviction strategy but is doesn't help. Additionally I can say that it is local environment, non clustering.

有人可以向我解释这种行为吗?

Could someone to explain me this behavior?

推荐答案

如果您有 maxEntries = 10 ，我希望您在缓存中会有±8个条目，而不仅仅是3个.通常，答案在这里:

If you have maxEntries=10, I'd expect you would have ±8 entries in the cache, not just 3. But generally, the answer is here:

• 缓存的条目数从未达到已配置的maxEntries，为什么?
• 高级逐出内部文件(也介绍了此处)

• Cache’s number of entries never reaches configured maxEntries, why is that?
• Advanced Eviction Internals (also described here)

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