# Other supported resources in Amazon OpenSearch Service
Other supported resources

This topic describes additional resources that Amazon OpenSearch Service supports.

**bootstrap.memory\$1lock**  
OpenSearch Service enables `bootstrap.memory_lock` in `opensearch.yml`, which locks JVM memory and prevents the operating system from swapping it to disk. This applies to all supported instance types except for the following:  
+ `t2.micro.search`
+ `t2.small.search`
+ `t2.medium.search`
+ `t3.small.search`
+ `t3.medium.search`

**Scripting module**  
OpenSearch Service supports scripting for Elasticsearch 5.*x* and later domains. It does not support scripting for 1.5 or 2.3.  
Supported scripting options include the following:  
+ Painless
+ Lucene Expressions
+ Mustache
For Elasticsearch 5.5 and later domains, and all OpenSearch domains, OpenSearch Service supports stored scripts using the `_scripts` endpoint. Elasticsearch 5.3 and 5.1 domains support inline scripts only.

**TLS transport**  
OpenSearch Service supports HTTP on port 80 and HTTPS over port 443, but does not support TLS transport.