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| SapanaK |
 Posted: Mon Sep 17, 2012 2:32 am Post subject: IA91 Cache Functionality - item expiry |
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Newbie
Joined: 17 Sep 2012
Posts: 9
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We are using IA91 supportpack in our project for its in-memory cache functionality. Context -
1. Only ESQL api's are being used, there is no cache node.
2. Items in cache are expected to expire at midnight.
I have observed that items in cache expire few hundred milliseconds prior to expected time, has anyone else experienced this? |
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| lancelotlinc |
| Posted: Mon Sep 17, 2012 5:00 am Post subject: |
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Jedi Knight
Joined: 22 Mar 2010
Posts: 4941
Location: Bloomington, IL USA
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Why is this a problem? If it is a problem, expire your messages at 12:01. Or better yet, use solidDb, a Singleton, or a Java HashMap. All these are accessible from ESQL and give you more finite control.
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| SapanaK |
| Posted: Mon Sep 17, 2012 5:19 am Post subject: |
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Newbie
Joined: 17 Sep 2012
Posts: 9
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Thanks for your reply. This is a problem becuase our application rely on finding data only in cache. If not found in cache it doesn't do further database lookup before concluding that item is not found.
I will get the expiryTime changed, but wanted to know at high level to what extent is it guaranteed to be accurate - meaning to specified seconds/minutes etc, so that I can safely move it accordingly. |
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| lancelotlinc |
| Posted: Mon Sep 17, 2012 5:31 am Post subject: |
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Jedi Knight
Joined: 22 Mar 2010
Posts: 4941
Location: Bloomington, IL USA
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| SapanaK wrote: |
| to what extent is it guaranteed to be accurate |
If you read the disclaimer on the support pak there is an explicit statement:
| Quote: |
| Category 2 SupportPacs are provided in good faith and AS-IS. There is no warranty or further service implied or committed and any supplied sample code is not supported via IBM product service channels. |
Use a Singleton or a HashMap if you want a guarantee.
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| Vitor |
| Posted: Mon Sep 17, 2012 5:42 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| lancelotlinc wrote: |
| Use a Singleton or a HashMap if you want a guarantee. |
Or move to WMBv8 where the caching functionality is in the product rather than a Cat 2 support pac.
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Insanity is the best defence. |
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