feat: add batch check configuration vars (#905)

docs/content/getting-started/perform-check.mdx

@@ -1,6 +1,7 @@
 ---
 title: Perform a Check
 sidebar_position: 4
+toc_max_heading_level: 4
 slug: /getting-started/perform-check
 description: Checking if a user is authorized to perform an action on a resource
 ---
@@ -207,6 +208,18 @@ To check whether user `user:anne` has multiple relationships `writer` and `reade
 
 The result will include an `allowed` field for each authorization check that will return `true` if the relationship exists and `false` if the relationship does not exist.
 
+#### Configuring Batch Check
+BatchCheck has two available configuration options:
+
+1. Limit the number of checks allowed in a single BatchCheck request.
+    * Environment variable: `OPENFGA_MAX_CHECKS_PER_BATCH_CHECK`
+    * Command line flag: `--max-checks-per-batch-check`
+    * If more items are received in a single request than allowed by this limit, the API will return an error.
+
+2. Limit the number of Checks which can be resolved concurrently
+    * Environment variable: `OPENFGA_MAX_CONCURRENT_CHECKS_PER_BATCH_CHECK`
+    * Command line flag: `--max-concurrent-checks-per-batch-check`
+
 ## Related Sections
 
 <RelatedSection

docs/content/getting-started/production-best-practices.mdx

@@ -67,6 +67,7 @@ The following table enumerates the server's concurrency specific settings:
 | --max-concurrent-reads-for-check        | OPENFGA_MAX_CONCURRENT_READS_FOR_CHECK        | maxConcurrentReadsForCheck       |
 | --resolve-node-limit                    | OPENFGA_RESOLVE_NODE_LIMIT                    | resolveNodeLimit                 |
 | --resolve-node-breadth-limit            | OPENFGA_RESOLVE_NODE_BREADTH_LIMIT            | resolveNodeBreadthLimit          |
+| --max-concurrent-checks-per-batch-check | OPENFGA_MAX_CONCURRENT_CHECKS_PER_BATCH_CHECK | maxConcurrentChecksPerBatchCheck |
 
 
 Determining the right values for these settings will be based on a variety of factors including, but not limited to, the database specific deployment topology, the FGA model(s) involved, and the relationship tuples in the system. However, here are some high-level guidelines: