## regexp_time_limit 

Section 12.8.2, “Regular Expressions” Section 5.1.8, “Server System Variables” Section 1.3, “What Is New in MySQL 8.0” 

## relay 

Section 2.11.4, “Changes in MySQL 8.0” Section 17.2.2.3, “Startup Options and Replication Channels” 

## relay_log 

Section 17.1.2.8, “Adding Replicas to a Replication Environment” Section 18.10, “Frequently Asked Questions” Section 17.4.7, “Improving Replication Performance” Section 17.1.6.3, “Replica Server Options and Variables” Section 17.2.2.4, “Replication Channel Naming Conventions” Section 17.2.4.1, “The Relay Log” Section 1.3, “What Is New in MySQL 8.0” 

## relay_log_basename 

Section 17.1.6.3, “Replica Server Options and Variables” 

## relay_log_index 

Section 17.1.2.8, “Adding Replicas to a Replication Environment” Section 17.1.6.3, “Replica Server Options and Variables” Section 17.2.4.1, “The Relay Log” 

## relay_log_info_file 

Section 17.1.6.3, “Replica Server Options and Variables” Section 17.2.4.2, “Replication Metadata Repositories” 

## relay_log_info_repository 

Section 2.11.4, “Changes in MySQL 8.0” Section 5.6.7.6, “Cloning for Replication” Section 18.3.1, “Group Replication Requirements” Section 17.4.2, “Handling an Unexpected Halt of a Replica” Section 17.1.6.3, “Replica Server Options and Variables” Section 17.2.4.2, “Replication Metadata Repositories” Section 13.4.2.5, “RESET REPLICA | SLAVE Statement” Section 17.2.2.3, “Startup Options and Replication Channels” Section 1.3, “What Is New in MySQL 8.0” 

## relay_log_purge 

Section 17.1.6.3, “Replica Server Options and Variables” Section 13.7.7.35, “SHOW REPLICA | SLAVE STATUS Statement” 

## relay_log_recovery 

Section 17.4.2, “Handling an Unexpected Halt of a Replica” Section 17.1.6.3, “Replica Server Options and Variables” 

## relay_log_space_limit 

Section 17.1.6.3, “Replica Server Options and Variables” 

