16 lines
762 B
Markdown
16 lines
762 B
Markdown
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# Refresh-ahead
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## Introduction
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[Source: From cache to in-memory data grid](http://www.slideshare.net/tmatyashovsky/from-cache-to-in-memory-data-grid-introduction-to-hazelcast)
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You can configure the cache to automatically refresh any recently accessed cache entry prior to its expiration.
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Refresh-ahead can result in reduced latency vs read-through if the cache can accurately predict which items are likely to be needed in the future.
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## Disadvantage(s) : refresh-ahead
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- Not accurately predicting which items are likely to be needed in the future can result in reduced performance than without refresh-ahead.
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