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I am storing entries in IgniteCache, and After each time interval (lets say 1 Hr), entries stored in that Hour should get Evicted and Stored to Hbase. How can I achieve this?

I tried as follows. 

setExpiryPolicyFactory(CreatedExpiryPolicy.factoryOf(Duration.ONE_HOUR));

But this evicts entries one by one, after 1 Hour when particular entry was inserted, I want Bulk eviction and those evicted entries will be stored in HBASE.

Sibeesh Venu
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iamLalit
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1 Answers1

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It sounds like you're going to evict everything that you have in cache, right? If so, I would just use write-through to make sure that all the cache updates are propagated to HBASE, and then simply destroy and recreate the cache from scratch every hour.

Ram Ghadiyaram
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Valentin Kulichenko
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  • Yes I am going to delete every thing from cache, I did use the write-though but it affect one entry that I am inserting, ie the entry inserting in Cache (I am storing entyries in form of JSONObject). I want one complete Eviction of Cache, and all those collective Entries will be evicted on a Listener. In short, I am making Ignite a buffer for entries which are to be inserted in HBASE for 1 hour. – iamLalit Dec 26 '16 at 12:57
  • This will require iteration through all entries in the cache. And (depending on required guarantees) probably lock-the-world semantics during this eviction process. The solution I proposed do not require this - data is written to HBase while you update the cache, and in-memory data is cleared immediately since you can destroy the whole cache (this operation does not require iteration). – Valentin Kulichenko Dec 26 '16 at 18:37
  • Hello, What happen to evicted data, can I get that evicted data on Any Listener or Method or such – iamLalit Dec 28 '16 at 10:11