# Architecture selection
<a name="architecture-selection"></a>


| AOSPERF01: How do you plan, monitor, and optimize your sharding strategy? | 
| --- | 
|   | 

 Providing the effectiveness of your sharding strategy in OpenSearch Service involves planning, monitoring, and ongoing optimization. Sharding is a critical aspect of OpenSearch Service's distributed architecture, and a well-designed strategy can significantly impact the performance, scalability, and reliability of your domain.


| AOSPERF02: How do you monitor and optimize resource allocation for your OpenSearch instances? | 
| --- | 
|   | 

 Optimizing resource utilization in your OpenSearch domain instances is important for several reasons, as it contributes to the efficiency, cost-effectiveness, stability, reliability, efficient data storage and overall performance of your search and analytics environment.

**Topics**
+ [AOSPERF01-BP01 Maintain shard sizes at recommended ranges](aosperf01-bp01.md)
+ [AOSPERF01-BP02 Check shard-to-CPU ratio](aosperf01-bp02.md)
+ [AOSPERF01-BP03 Check the number of shards per GiB of heap memory](aosperf01-bp03.md)
+ [AOSPERF02-BP01 Implement processor utilization monitoring](aosperf02-bp01.md)
+ [AOSPERF02-BP02 Implement Java memory utilization monitoring](aosperf02-bp02.md)