[MySQL][8.0.26] Global Variables 설명

- Show Global variables like '%%';

Variable_name	Value	Description
activate_all_roles_on_login	OFF
admin_address	""
admin_port	33062
admin_ssl_ca	""
admin_ssl_capath	""
admin_ssl_cert	""
admin_ssl_cipher	""
admin_ssl_crl	""
admin_ssl_crlpath	""
admin_ssl_key	""
admin_tls_ciphersuites	""
admin_tls_version	TLSv1,TLSv1.1,TLSv1.2,TLSv1.3
auto_generate_certs	ON
auto_increment_increment	1	✔️ Auto increment 컬럼의 증가값을 결정
auto_increment_offset	1	✔️ Auto increment 컬럼의 초기 시작값을 지정
autocommit	ON
automatic_sp_privileges	ON
avoid_temporal_upgrade	OFF
back_log	80
basedir	C:\Program Files\MySQL\MySQL Server 8.0\
big_tables	OFF
bind_address	*
binlog_cache_size	32768
binlog_checksum	CRC32
binlog_direct_non_transactional_updates	OFF
binlog_encryption	OFF
binlog_error_action	ABORT_SERVER
binlog_expire_logs_seconds	2592000
binlog_format	ROW	✔️ Replication Slave 서버는 이벤트를 지정된 포맷으로 읽는다. ✔️ STATEMENT(1): 명령문 기반 리플리케이션 ✔️ ROW(2): 열 기반 리플리케이션 ✔️ MIXED(3): 혼합 기반 리플리케이션
binlog_group_commit_sync_delay	0
binlog_group_commit_sync_no_delay_count	0
binlog_gtid_simple_recovery	ON
binlog_max_flush_queue_time	0
binlog_order_commits	ON
binlog_rotate_encryption_master_key_at_startup	OFF
binlog_row_event_max_size	8192
binlog_row_image	FULL
binlog_row_metadata	MINIMAL
binlog_row_value_options	""
binlog_rows_query_log_events	OFF
binlog_stmt_cache_size	32768
binlog_transaction_compression	OFF
binlog_transaction_compression_level_zstd	3
binlog_transaction_dependency_history_size	25000
binlog_transaction_dependency_tracking	COMMIT_ORDER
block_encryption_mode	aes-128-ecb
bulk_insert_buffer_size	8388608
caching_sha2_password_auto_generate_rsa_keys	ON
caching_sha2_password_digest_rounds	5000
caching_sha2_password_private_key_path	private_key.pem
caching_sha2_password_public_key_path	public_key.pem
character_set_client	utf8mb4
character_set_connection	utf8mb4
character_set_database	utf8mb4
character_set_filesystem	binary
character_set_results	utf8mb4
character_set_server	utf8mb4
character_set_system	utf8mb3
character_sets_dir	C:\Program Files\MySQL\MySQL Server 8.0\share\charsets\
check_proxy_users	OFF
collation_connection	utf8mb4_0900_ai_ci
collation_database	utf8mb4_0900_ai_ci
collation_server	utf8mb4_0900_ai_ci
completion_type	NO_CHAIN
concurrent_insert	AUTO
connect_timeout	10	✔️ mysqld 서버가 불량 핸드셰이크로 응답하기 전에 연결 패킷을 기다리는 시간(초)입니다. ✔️ 기본값은 10초입니다. ✔️ 클라이언트에서 MySQL 서버에 대한 연결이 'XXX'에서 손실된 경우, 시스템 오류: errno 형식의 오류가 자주 발생하는 경우 connect_timeout 값을 증가시키면 도움이 될 수 있습니다.
core_file	OFF
create_admin_listener_thread	OFF
cte_max_recursion_depth	1000
datadir	d:\MySQL\MySQL Server 8.0_25004\Data\
default_authentication_plugin	mysql_native_password
default_collation_for_utf8mb4	utf8mb4_0900_ai_ci
default_password_lifetime	0
default_storage_engine	InnoDB
default_table_encryption	OFF
default_tmp_storage_engine	InnoDB
default_week_format	0
delay_key_write	ON
delayed_insert_limit	100
delayed_insert_timeout	300
delayed_queue_size	1000
disabled_storage_engines	""
disconnect_on_expired_password	ON
div_precision_increment	4
end_markers_in_json	OFF
enforce_gtid_consistency	OFF
eq_range_index_dive_limit	200
event_scheduler	ON
expire_logs_days	0
explicit_defaults_for_timestamp	ON
flush	OFF
flush_time	0
foreign_key_checks	ON
ft_boolean_syntax	"+ -><()~*:""""&|"
ft_max_word_len	84
ft_min_word_len	4
ft_query_expansion_limit	20
ft_stopword_file	(built-in)
general_log	OFF
general_log_file	DEV-DB133.log
generated_random_password_length	20
group_concat_max_len	1024
group_replication_consistency	EVENTUAL
gtid_executed	""
gtid_executed_compression_period	0
gtid_mode	OFF
gtid_owned	""
gtid_purged	""
have_compress	YES
have_dynamic_loading	YES
have_geometry	YES
have_openssl	YES
have_profiling	YES
have_query_cache	NO
have_rtree_keys	YES
have_ssl	YES
have_statement_timeout	YES
have_symlink	DISABLED
histogram_generation_max_mem_size	20000000
host_cache_size	628
hostname	DEV-DB133
information_schema_stats_expiry	86400
init_connect	""
init_file	""
init_replica	""
init_slave	""
innodb_adaptive_flushing	ON
innodb_adaptive_flushing_lwm	10
innodb_adaptive_hash_index	ON
innodb_adaptive_hash_index_parts	8
innodb_adaptive_max_sleep_delay	150000
innodb_api_bk_commit_interval	5
innodb_api_disable_rowlock	OFF
innodb_api_enable_binlog	OFF
innodb_api_enable_mdl	OFF
innodb_api_trx_level	0
innodb_autoextend_increment	64
innodb_autoinc_lock_mode	2
innodb_buffer_pool_chunk_size	8388608
innodb_buffer_pool_dump_at_shutdown	ON
innodb_buffer_pool_dump_now	OFF
innodb_buffer_pool_dump_pct	25
innodb_buffer_pool_filename	ib_buffer_pool
innodb_buffer_pool_in_core_file	ON
innodb_buffer_pool_instances	1
innodb_buffer_pool_load_abort	OFF
innodb_buffer_pool_load_at_startup	ON
innodb_buffer_pool_load_now	OFF
innodb_buffer_pool_size	8388608
innodb_change_buffer_max_size	25
innodb_change_buffering	all
innodb_checksum_algorithm	crc32
innodb_cmp_per_index_enabled	OFF
innodb_commit_concurrency	0
innodb_compression_failure_threshold_pct	5
innodb_compression_level	6
innodb_compression_pad_pct_max	50
innodb_concurrency_tickets	5000
innodb_data_file_path	ibdata1:12M:autoextend
innodb_data_home_dir	""
innodb_deadlock_detect	ON
innodb_dedicated_server	OFF
innodb_default_row_format	dynamic
innodb_directories	""
innodb_disable_sort_file_cache	OFF
innodb_doublewrite	ON
innodb_doublewrite_batch_size	0
innodb_doublewrite_dir	""
innodb_doublewrite_files	2
innodb_doublewrite_pages	4
innodb_extend_and_initialize	ON
innodb_fast_shutdown	1
innodb_file_per_table	ON
innodb_fill_factor	100
innodb_flush_log_at_timeout	1
innodb_flush_log_at_trx_commit	1
innodb_flush_method	unbuffered
innodb_flush_neighbors	0
innodb_flush_sync	ON
innodb_flushing_avg_loops	30
innodb_force_load_corrupted	OFF
innodb_force_recovery	0
innodb_fsync_threshold	0
innodb_ft_aux_table	""
innodb_ft_cache_size	8000000
innodb_ft_enable_diag_print	OFF
innodb_ft_enable_stopword	ON
innodb_ft_max_token_size	84
innodb_ft_min_token_size	3
innodb_ft_num_word_optimize	2000
innodb_ft_result_cache_limit	2000000000
innodb_ft_server_stopword_table	""
innodb_ft_sort_pll_degree	2
innodb_ft_total_cache_size	640000000
innodb_ft_user_stopword_table	""
innodb_idle_flush_pct	100
innodb_io_capacity	200
innodb_io_capacity_max	2000
innodb_lock_wait_timeout	50
innodb_log_buffer_size	1048576
innodb_log_checksums	ON
innodb_log_compressed_pages	ON
innodb_log_file_size	50331648
innodb_log_files_in_group	2
innodb_log_group_home_dir	.\
innodb_log_spin_cpu_abs_lwm	80
innodb_log_spin_cpu_pct_hwm	50
innodb_log_wait_for_flush_spin_hwm	400
innodb_log_write_ahead_size	8192
innodb_log_writer_threads	ON
innodb_lru_scan_depth	1024
innodb_max_dirty_pages_pct	90.000000
innodb_max_dirty_pages_pct_lwm	10.000000
innodb_max_purge_lag	0
innodb_max_purge_lag_delay	0
innodb_max_undo_log_size	1073741824
innodb_monitor_disable	""
innodb_monitor_enable	""
innodb_monitor_reset	""
innodb_monitor_reset_all	""
innodb_old_blocks_pct	37
innodb_old_blocks_time	1000
innodb_online_alter_log_max_size	134217728
innodb_open_files	300
innodb_optimize_fulltext_only	OFF
innodb_page_cleaners	1
innodb_page_size	16384
innodb_parallel_read_threads	4
innodb_print_all_deadlocks	OFF
innodb_print_ddl_logs	OFF
innodb_purge_batch_size	300
innodb_purge_rseg_truncate_frequency	128
innodb_purge_threads	4
innodb_random_read_ahead	OFF
innodb_read_ahead_threshold	56
innodb_read_io_threads	4
innodb_read_only	OFF
innodb_redo_log_archive_dirs	""
innodb_redo_log_encrypt	OFF
innodb_replication_delay	0
innodb_rollback_on_timeout	OFF
innodb_rollback_segments	128
innodb_segment_reserve_factor	12.500000
innodb_sort_buffer_size	1048576
innodb_spin_wait_delay	6
innodb_spin_wait_pause_multiplier	50
innodb_stats_auto_recalc	ON
innodb_stats_include_delete_marked	OFF
innodb_stats_method	nulls_equal
innodb_stats_on_metadata	OFF
innodb_stats_persistent	ON
innodb_stats_persistent_sample_pages	20
innodb_stats_transient_sample_pages	8
innodb_status_output	OFF
innodb_status_output_locks	OFF
innodb_strict_mode	ON
innodb_sync_array_size	1
innodb_sync_spin_loops	30
innodb_table_locks	ON
innodb_temp_data_file_path	ibtmp1:12M:autoextend
innodb_temp_tablespaces_dir	.\#innodb_temp\
innodb_thread_concurrency	17
innodb_thread_sleep_delay	0
innodb_tmpdir	""
innodb_undo_directory	.\
innodb_undo_log_encrypt	OFF
innodb_undo_log_truncate	ON
innodb_undo_tablespaces	2
innodb_use_fdatasync	OFF
innodb_use_native_aio	ON
innodb_validate_tablespace_paths	ON
innodb_version	8.0.26
innodb_write_io_threads	4
interactive_timeout	28800
internal_tmp_mem_storage_engine	TempTable
join_buffer_size	262144
keep_files_on_create	OFF
key_buffer_size	8388608
key_cache_age_threshold	300
key_cache_block_size	1024
key_cache_division_limit	100
keyring_operations	ON
large_files_support	ON
large_page_size	0
large_pages	OFF
lc_messages	en_US
lc_messages_dir	C:\Program Files\MySQL\MySQL Server 8.0\share\
lc_time_names	en_US
license	GPL
local_infile	OFF
lock_wait_timeout	31536000	✔️ lock 이 걸린 테이블에 질의를 할때 락이 풀리기 까지 대기할 시간 ✔️ innodb 테이블 에서도 본 시간에 따라  lock wait 후 "Lock wait timeout exceeded; try restarting transaction" 오류 발생
log_bin	ON
log_bin_basename	d:\MySQL\MySQL Server 8.0_25004\Data\DEV-DB133-bin
log_bin_index	d:\MySQL\MySQL Server 8.0_25004\Data\DEV-DB133-bin.index
log_bin_trust_function_creators	OFF
log_bin_use_v1_row_events	OFF
log_error	.\DEV-DB133.err
log_error_services	log_filter_internal; log_sink_internal
log_error_suppression_list	""
log_error_verbosity	2
log_output	FILE
log_queries_not_using_indexes	OFF	✔️ 인덱스를 사용하지 않은 쿼리도 slow query log에 기록함
log_raw	OFF
log_replica_updates	ON
log_slave_updates	ON
log_slow_admin_statements	OFF
log_slow_extra	OFF
log_slow_replica_statements	OFF
log_slow_slave_statements	OFF
log_statements_unsafe_for_binlog	ON
log_throttle_queries_not_using_indexes	0
log_timestamps	UTC
long_query_time	1.000000
low_priority_updates	OFF
lower_case_file_system	ON
lower_case_table_names	1
mandatory_roles	""
master_info_repository	TABLE
master_verify_checksum	OFF
max_allowed_packet	4194304
max_binlog_cache_size	18446744073709547520
max_binlog_size	1073741824
max_binlog_stmt_cache_size	18446744073709547520
max_connect_errors	100	✔️ 호스트 연속 연결 요청이 연결에 성공하지 못한 상태에서 중단되면 서버는 해당 호스트를 추가 연결에서 차단합니다.  ✔️ 이전 연결이 중단된 후 max_connect_errors 시도 횟수보다 적은 시간 내에 호스트로부터의 연결이 성공적으로 설정된 경우 호스트의 오류 수는 0으로 지워집니다. ✔️ 차단된 호스트의 차단을 해제하려면 호스트 캐시를 플러시합니다.
max_connections	500	✔️ 최대 동시 클라이언트 연결 수입니다.
max_delayed_threads	20
max_digest_length	1024
max_error_count	1024
max_execution_time	0
max_heap_table_size	16777216
max_insert_delayed_threads	20
max_join_size	18446744073709551615
max_length_for_sort_data	4096
max_points_in_geometry	65536
max_prepared_stmt_count	16382
max_relay_log_size	0
max_seeks_for_key	4294967295
max_sort_length	1024
max_sp_recursion_depth	0
max_user_connections	0	✔️ 지정된 MySQL 사용자 계정에 허용된 최대 동시 연결 수입니다. ✔️ 값이 0(기본값)이면 "제한 없음"을 의미합니다. ✔️ 이 변수는 서버 시작 또는 런타임에 설정할 수 있는 전역 값을 가집니다. 또한 현재 세션과 연결된 계정에 적용되는 유효한 동시 연결 제한을 나타내는 읽기 전용 세션 값도 있습니다. ✔️ 세션 값은 다음과 같이 초기화됩니다. - 사용자 계정에 0이 아닌 MAX_USER_CONNECTION 리소스 제한이 있는 경우 세션 max_user_connections 값이 해당 제한으로 설정됩니다. 그렇지 않으면 세션 max_user_connections 값이 글로벌 값으로 설정됩니다. - 계정 리소스 제한은 CREATE USER 또는 ALTER USER 문을 사용하여 지정됩니다.
max_write_lock_count	4294967295
min_examined_row_limit	0
myisam_data_pointer_size	6
myisam_max_sort_file_size	107374182400
myisam_mmap_size	18446744073709551615
myisam_recover_options	OFF
myisam_repair_threads	1
myisam_sort_buffer_size	52428800
myisam_stats_method	nulls_unequal
myisam_use_mmap	OFF
mysql_native_password_proxy_users	OFF
mysqlx_bind_address	*
mysqlx_compression_algorithms	DEFLATE_STREAM,LZ4_MESSAGE,ZSTD_STREAM
mysqlx_connect_timeout	30
mysqlx_deflate_default_compression_level	3
mysqlx_deflate_max_client_compression_level	5
mysqlx_document_id_unique_prefix	0
mysqlx_enable_hello_notice	ON
mysqlx_idle_worker_thread_timeout	60
mysqlx_interactive_timeout	28800
mysqlx_lz4_default_compression_level	2
mysqlx_lz4_max_client_compression_level	8
mysqlx_max_allowed_packet	67108864
mysqlx_max_connections	100
mysqlx_min_worker_threads	2
mysqlx_port	33060
mysqlx_port_open_timeout	0
mysqlx_read_timeout	30
mysqlx_socket	/tmp/mysqlx.sock
mysqlx_ssl_ca	""
mysqlx_ssl_capath	""
mysqlx_ssl_cert	""
mysqlx_ssl_cipher	""
mysqlx_ssl_crl	""
mysqlx_ssl_crlpath	""
mysqlx_ssl_key	""
mysqlx_wait_timeout	28800
mysqlx_write_timeout	60
mysqlx_zstd_default_compression_level	3
mysqlx_zstd_max_client_compression_level	11
named_pipe	OFF
named_pipe_full_access_group	""
net_buffer_length	16384
net_read_timeout	30
net_retry_count	10
net_write_timeout	60
new	OFF
ngram_token_size	2
offline_mode	OFF
old	OFF
old_alter_table	OFF
open_files_limit	6558
optimizer_prune_level	1
optimizer_search_depth	62
optimizer_switch	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on,index_condition_pushdown=on,mrr=on,mrr_cost_based=on,block_nested_loop=on,batched_key_access=off,materialization=on,semijoin=on,loosescan=on,firstmatch=on,duplicateweedout=on,subquery_materialization_cost_based=on,use_index_extensions=on,condition_fanout_filter=on,derived_merge=on,use_invisible_indexes=off,skip_scan=on,hash_join=on,subquery_to_derived=off,prefer_ordering_index=on,hypergraph_optimizer=off,derived_condition_pushdown=on
optimizer_trace	enabled=off,one_line=off
optimizer_trace_features	greedy_search=on,range_optimizer=on,dynamic_range=on,repeated_subselect=on
optimizer_trace_limit	1
optimizer_trace_max_mem_size	1048576
optimizer_trace_offset	-1
parser_max_mem_size	18446744073709551615
partial_revokes	OFF
password_history	0
password_require_current	OFF
password_reuse_interval	0
performance_schema	ON
performance_schema_accounts_size	-1
performance_schema_digests_size	10000
performance_schema_error_size	4946
performance_schema_events_stages_history_long_size	10000
performance_schema_events_stages_history_size	10
performance_schema_events_statements_history_long_size	10000
performance_schema_events_statements_history_size	10
performance_schema_events_transactions_history_long_size	10000
performance_schema_events_transactions_history_size	10
performance_schema_events_waits_history_long_size	10000
performance_schema_events_waits_history_size	10
performance_schema_hosts_size	-1
performance_schema_max_cond_classes	100
performance_schema_max_cond_instances	-1
performance_schema_max_digest_length	1024
performance_schema_max_digest_sample_age	60
performance_schema_max_file_classes	80
performance_schema_max_file_handles	32768
performance_schema_max_file_instances	-1
performance_schema_max_index_stat	-1
performance_schema_max_memory_classes	450
performance_schema_max_metadata_locks	-1
performance_schema_max_mutex_classes	300
performance_schema_max_mutex_instances	-1
performance_schema_max_prepared_statements_instances	-1
performance_schema_max_program_instances	-1
performance_schema_max_rwlock_classes	60
performance_schema_max_rwlock_instances	-1
performance_schema_max_socket_classes	10
performance_schema_max_socket_instances	-1
performance_schema_max_sql_text_length	1024
performance_schema_max_stage_classes	175
performance_schema_max_statement_classes	218
performance_schema_max_statement_stack	10
performance_schema_max_table_handles	-1
performance_schema_max_table_instances	-1
performance_schema_max_table_lock_stat	-1
performance_schema_max_thread_classes	100
performance_schema_max_thread_instances	-1
performance_schema_session_connect_attrs_size	512
performance_schema_setup_actors_size	-1
performance_schema_setup_objects_size	-1
performance_schema_show_processlist	OFF
performance_schema_users_size	-1
persist_only_admin_x509_subject	""
persisted_globals_load	ON
pid_file	d:\MySQL\MySQL Server 8.0_25004\Data\DEV-DB133.pid
plugin_dir	C:\Program Files\MySQL\MySQL Server 8.0\lib\plugin\
port	25004
preload_buffer_size	32768
print_identified_with_as_hex	OFF
profiling	OFF
profiling_history_size	15
protocol_compression_algorithms	zlib,zstd,uncompressed
protocol_version	10
query_alloc_block_size	8192
query_prealloc_size	8192
range_alloc_block_size	4096
range_optimizer_max_mem_size	8388608
rbr_exec_mode	STRICT
read_buffer_size	65536
read_only	OFF
read_rnd_buffer_size	262144
regexp_stack_limit	8000000
regexp_time_limit	32
relay_log	DEV-DB133-relay-bin
relay_log_basename	d:\MySQL\MySQL Server 8.0_25004\Data\DEV-DB133-relay-bin
relay_log_index	d:\MySQL\MySQL Server 8.0_25004\Data\DEV-DB133-relay-bin.index
relay_log_info_file	relay-log.info
relay_log_info_repository	TABLE
relay_log_purge	ON
relay_log_recovery	OFF
relay_log_space_limit	0
replica_allow_batching	OFF
replica_checkpoint_group	512
replica_checkpoint_period	300
replica_compressed_protocol	OFF
replica_exec_mode	STRICT
replica_load_tmpdir	C:\Windows\SERVIC~1\NETWOR~1\AppData\Local\Temp
replica_max_allowed_packet	1073741824
replica_net_timeout	60
replica_parallel_type	DATABASE
replica_parallel_workers	0
replica_pending_jobs_size_max	134217728
replica_preserve_commit_order	OFF
replica_skip_errors	OFF
replica_sql_verify_checksum	ON
replica_transaction_retries	10
replica_type_conversions	""
replication_optimize_for_static_plugin_config	OFF
replication_sender_observe_commit_only	OFF
report_host	""
report_password	""
report_port	25004
report_user	""
require_secure_transport	OFF
rpl_read_size	8192
rpl_stop_replica_timeout	31536000
rpl_stop_slave_timeout	31536000
schema_definition_cache	256
secondary_engine_cost_threshold	100000.000000
secure_file_priv	d:\MySQL\MySQL Server 8.0_25004\Uploads\
select_into_buffer_size	131072
select_into_disk_sync	OFF
select_into_disk_sync_delay	0
server_id	1
server_id_bits	32
server_uuid	29f4b9a
session_track_gtids	OFF
session_track_schema	ON
session_track_state_change	OFF
session_track_system_variables	time_zone,autocommit,character_set_client,character_set_results,character_set_connection
session_track_transaction_info	OFF
sha256_password_auto_generate_rsa_keys	ON
sha256_password_private_key_path	private_key.pem
sha256_password_proxy_users	OFF
sha256_password_public_key_path	public_key.pem
shared_memory	OFF
shared_memory_base_name	MYSQL
show_create_table_verbosity	OFF
show_old_temporals	OFF
skip_external_locking	ON
skip_name_resolve	OFF
skip_networking	OFF
skip_replica_start	OFF
skip_show_database	OFF
skip_slave_start	OFF
slave_allow_batching	OFF
slave_checkpoint_group	512
slave_checkpoint_period	300
slave_compressed_protocol	OFF
slave_exec_mode	STRICT
slave_load_tmpdir	C:\Windows\SERVIC~1\NETWOR~1\AppData\Local\Temp
slave_max_allowed_packet	1073741824
slave_net_timeout	60
slave_parallel_type	DATABASE
slave_parallel_workers	0
slave_pending_jobs_size_max	134217728
slave_preserve_commit_order	OFF
slave_rows_search_algorithms	INDEX_SCAN,HASH_SCAN
slave_skip_errors	OFF
slave_sql_verify_checksum	ON
slave_transaction_retries	10
slave_type_conversions	""
slow_launch_time	2
slow_query_log	ON
slow_query_log_file	DEV-DB133-slow.log
socket	MySQL
sort_buffer_size	262144
source_verify_checksum	OFF
sql_auto_is_null	OFF
sql_big_selects	ON
sql_buffer_result	OFF
sql_log_off	OFF
sql_mode	STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION
sql_notes	ON
sql_quote_show_create	ON
sql_replica_skip_counter	0
sql_require_primary_key	OFF
sql_safe_updates	OFF
sql_select_limit	18446744073709551615
sql_slave_skip_counter	0
sql_warnings	OFF
ssl_ca	ca.pem
ssl_capath	""
ssl_cert	server-cert.pem
ssl_cipher	""
ssl_crl	""
ssl_crlpath	""
ssl_fips_mode	OFF
ssl_key	server-key.pem
stored_program_cache	256
stored_program_definition_cache	256
super_read_only	OFF
sync_binlog	1
sync_master_info	10000
sync_relay_log	10000
sync_relay_log_info	10000
sync_source_info	10000
system_time_zone	""
table_definition_cache	1400
table_encryption_privilege_check	OFF
table_open_cache	2000
table_open_cache_instances	16
tablespace_definition_cache	256
temptable_max_mmap	1073741824
temptable_max_ram	1073741824
temptable_use_mmap	ON
terminology_use_previous	NONE
thread_cache_size	10
thread_handling	one-thread-per-connection
thread_stack	286720
time_zone	SYSTEM
tls_ciphersuites	""
tls_version	TLSv1,TLSv1.1,TLSv1.2,TLSv1.3
tmp_table_size	30408704
tmpdir	C:\Windows\SERVIC~1\NETWOR~1\AppData\Local\Temp
transaction_alloc_block_size	8192
transaction_isolation	REPEATABLE-READ
transaction_prealloc_size	4096
transaction_read_only	OFF
transaction_write_set_extraction	XXHASH64
unique_checks	ON
updatable_views_with_limit	YES
version	8.0.26
version_comment	MySQL Community Server - GPL
version_compile_machine	x86_64
version_compile_os	Win64
version_compile_zlib	1.2.11
wait_timeout	28800	✔️ 접속한 후 쿼리가 들어올 때까지 대기하는 시간. ✔️ 연결 후 지정된 사간동안 쿼리가 수신되지 않으면 해당 연결을 강제로 종료함 ✔️ 접속이 많은 데이터베이스 시스템 에서는 이 값을 낮춰 Sleep 상태의 클라이언트들을 접속 해제하여 성능 향상을 볼 수 있다. ✔️ wait_timeout 에 걸려 접속이 해제되면 aborted_client 수가 상승하게 됨 ✔️ node.js 처럼 Connection Pool을 사용하는 시스템은 해당 값을 늘리는게 연결이 몰릴때 이점이 있음 ✔️ 단위: 초, default=8시간
windowing_use_high_precision	ON