add unified read pool configs to config template
## Set it small are good to debug and tuning.
# refresh-config-interval = "30s"
+[readpool]
+## (Experimental) Whether to use a single thread pool to serve all the read requests. If it is
+## set to `true`, the `readpool.storage` and `readpool.coprocessor` sections will be invalid and
+## be ignored automatically.
+# unify-read-pool = false
+
+# Configurations for the single thread pool serving read requests.
+# It only takes effect when `unify-read-pool` is `true`.
+[readpool.unified]
+## The minimal working thread count of the thread pool.
+# min-thread-count = 1
+## The maximum working thread count of the thread pool.
+## The default value is the max(4, LOGICAL_CPU_NUM * 0.8).
+# max-thread-count = 8
+
[readpool.storage]
## Size of the thread pool for high-priority operations.
# high-concurrency = 4
