add ReportingDBParameters DB parameter group to data stack template

[ci skip]

aws/cloudformation/data.yml.erb

@@ -107,3 +107,64 @@ Resources:
       TableMappings: !Sub |
         <%= table_mappings.to_json %>
 <% end -%>
+  ReportingDBParameters:
+    Type: AWS::RDS::DBParameterGroup
+    Properties:
+      Description: !Sub "Reporting Read Replica DB Parameters for ${AWS::StackName}."
+      Family: mysql5.7
+      Parameters:
+        # Allow redo log to grow larger before flushing for better write I/O efficiency.
+        innodb_adaptive_flushing_lwm: 40
+        # Improve insert/update concurrency for autoincrement tables.
+        innodb_autoinc_lock_mode: 2
+        # Reduce durability for better performance.
+        innodb_flush_log_at_trx_commit: 0
+        # Neighbor flushing reduces performance without any benefit on SSD.
+        innodb_flush_neighbors: 0
+        # IO capacity controls background flushing rate (IO/sec).
+        innodb_io_capacity: 1000
+        # IO capacity max controls maximum background flushing rate when certain thresholds are reached.
+        innodb_io_capacity_max: 3000
+        # Larger log buffer size allows larger transactions without writing to disk.
+        innodb_log_buffer_size: <%=16.megabytes%>
+        # Larger redo log file size allows write combining for better write I/O efficiency.
+        innodb_log_file_size: <%=2.gigabytes%>
+        # LRU scan depth controls LRU flushing rate (IO/sec).
+        innodb_lru_scan_depth: 1000
+        # Enable all InnoDB performance schema monitors for better debugging.
+        innodb_monitor_enable: all
+        # Random read ahead can improve overall read-query performance, important for reporting.
+        innodb_random_read_ahead: 1
+        # Increase number of threads for background reads (read-ahead)
+        innodb_read_io_threads: 8
+        # Increase sample pages for more accurate statistics for query plans.
+        innodb_stats_persistent_sample_pages: 60
+        # 'Splits an internal data structure used to coordinate threads, for higher concurrency in workloads with large numbers of waiting threads.'
+        # AWS recommended increasing to max (1024).
+        innodb_sync_array_size: 1024
+        # Number of threads for background writes
+        innodb_write_io_threads: 8
+        # Reporting DB currently needs write access for contact rollup staging table.
+        read_only: 0
+        # Don't resolve DNS on usernames.
+        skip_name_resolve: 1
+        # Use compression for replication.
+        slave_compressed_protocol: 1
+        # Enable parallel replication.
+        slave_parallel_workers: 8
+        # Enable parallel replication without violating consistency.
+        slave_parallel_type: LOGICAL_CLOCK
+        slave_preserve_commit_order: 1
+        # Enable slow query log.
+        slow_query_log: 1
+        # Reduce durability for better performance.
+        sync_binlog: 0
+        # Fully cache all open tables and table definitions.
+        table_definition_cache: 20000
+        table_open_cache: 20000
+        # Relax transaction isolation for improved concurrency under load.
+        tx_isolation: READ-COMMITTED
+        # Requirements for DMS Change Data Capture.
+        # Ref: https://docs.aws.amazon.com/dms/latest/userguide/CHAP_Source.MySQL.html#CHAP_Source.MySQL.AmazonManaged
+        binlog_format: ROW
+        binlog_checksum: NONE