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From Dmitriy Setrakyan <dsetrak...@apache.org>
Subject Re: Memory is not going down after cache.clean()
Date Mon, 04 Sep 2017 03:06:41 GMT
On Sun, Sep 3, 2017 at 12:35 AM, dkarachentsev <dkarachentsev@gridgain.com>

> Hi,
> Just to clarify my words a bit. When persistence is enabled, all memory
> data
> are stored on disk with all durability guarantees. But it is also allows
> you
> to store in cache more data than you can fit in memory: Ignite just evicts
> stale data pages from RAM, and when they will be needed - loaded from disk.
> So you always have everything on hard drive and hot data in memory.

Let me clarify a bit more. When Ignite persistence is enabled, all the data
gets persisted to disk. If the data size exceeds the pre-configured memory
size, then Ignite will start purging the cold pages and will only keep the
hot data in memory.

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