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© 2019 Percona 1 Marcelo Altmann ProxySQL para MySQL Mais que um simples proxy - Exemplos de uso Senior Support Engineer Percona University - São Paulo 27/04/2019

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© 2019 Percona 2 Agenda

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© 2019 Percona 3 Agenda ▪Sobre Mim ▪Introdução ▪Features ▪Caso de uso

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© 2019 Percona 4 Sobre Mim

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© 2019 Percona 5 Marcelo Altmann ▪Engenheiro de Suporte @ percona • MySQL DBA @ IEDR (CCTLD Irlanda) ▪Tecnologo em Sistemas para Internet ▪Oracle ACE Associate ▪blog.marceloaltmann.com ▪Certificaçoes • OCP, MySQL 5.7 Database Administrator • OCP, MySQL 5.6 Database Administrator • OCP, MySQL 5.6 Developer • OCP, MySQL 5 Database Administrator • OCP, MySQL 5 Developer • OCP, MySQL 5.0/5.1/5.5

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© 2019 Percona 6 ProxySQL - Introdução

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© 2019 Percona 7 ProxySQL - Introdução ▪Criado e mantido por René Cannaò • MySQL Community - Contribuidor do ano (2017) • MySQL Community - Software do ano (2018) • MySQL Community Contributor Award - Oracle (2019) ▪Open Source • http://www.proxysql.com/ • https://github.com/sysown/proxysql

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© 2019 Percona 8 ProxySQL - Introdução ▪Instalação • Source Code / rpm / deb / percona repo (yum / apt-get) ▪MySQL admin interface [root@localhost ~]# mysql -u admin -padmin -P 6032 -h 127.0.0.1 --prompt='Admin> ' mysql: [Warning] Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 5.5.30 (ProxySQL Admin Module) . . . Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. Admin>

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© 2019 Percona 9 ProxySQL - Introdução ▪Camadas • Runtime - Dados que o proxySQL acessa • Main/Memory - Camada onde executamos alterações e monitoramento • Disk - Camada para persistir dados. SQLite3

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© 2019 Percona 10 ProxySQL - Introdução +-------------------------+ | 1. RUNTIME | <- processo proxysql +-------------------------+ /|\ | | | | \|/ +-------------------------+ | 2. MEMORY | <- DML +-------------------------+ /|\ | | | | \|/ +-------------------------+ | 3. DISK | <- /var/lib/proxysql/proxysql.db +-------------------------+

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© 2019 Percona 11 ProxySQL - Introdução ▪Tabelas • mysql_servers - Contém a lista de servidores e HG (Host Group) mysql> SELECT hostgroup_id, hostname, status, comment FROM mysql_servers; +--------------+----------+--------+---------+ | hostgroup_id | hostname | status | comment | +--------------+----------+--------+---------+ | 10 | node1 | ONLINE | WRITE | | 11 | node2 | ONLINE | READ | | 11 | node3 | ONLINE | READ | +--------------+----------+--------+---------+

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© 2019 Percona 12 ProxySQL - Introdução ▪Tabelas • mysql_users - Contém a lista de usuário para autenticação. mysql> SELECT username, default_hostgroup FROM mysql_users; +---------------+-------------------+ | username | default_hostgroup | +---------------+-------------------+ | proxysql_user | 10 | +---------------+-------------------+ 1 row in set (0.00 sec)

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© 2019 Percona 13 ProxySQL - Introdução ▪Tabelas • mysql_query_rules - Contém a lista de regras para cache, reescrita e redirecionamento de queries.

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© 2019 Percona 14 ProxySQL - Features - Load Balance

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© 2019 Percona 15 ProxySQL - Features - Load Balance ▪Usuários de autenticação Admin> INSERT INTO mysql_users (username,password,default_hostgroup) VALUES ('proxysql_user','Pr0xySQL!',10); Query OK, 1 row affected (0.00 sec) Admin> LOAD MYSQL USERS TO RUNTIME ; Query OK, 0 rows affected (0.00 sec) Admin> SAVE MYSQL USERS FROM RUNTIME; -- Hack para o plain-text password Query OK, 0 rows affected (0.00 sec) Admin> SAVE MYSQL USERS TO DISK ; Query OK, 0 rows affected (0.01 sec)

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© 2019 Percona 16 ProxySQL - Features - Load Balance ▪Redirecionamento do tráfego para lista de servidores Admin> INSERT INTO mysql_servers (hostname, hostgroup_id, comment) VALUES ('node1',10,'WRITE'),('node2',11,'READ'),('node3',11,'READ'); Query OK, 3 rows affected (0.00 sec) Admin> LOAD MYSQL SERVERS TO RUNTIME; Query OK, 0 rows affected (0.01 sec) Admin> SAVE MYSQL SERVERS TO DISK; Query OK, 0 rows affected (0.02 sec) Admin> SELECT hostgroup_id, hostname, status, comment FROM mysql_servers; +--------------+----------+--------+---------+ | hostgroup_id | hostname | status | comment | +--------------+----------+--------+---------+ | 10 | node1 | ONLINE | WRITE | | 11 | node2 | ONLINE | READ | | 11 | node3 | ONLINE | READ | +--------------+----------+--------+---------+ 3 rows in set (0.00 sec)

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© 2019 Percona 17 ProxySQL - Features - Load Balance ▪Dividir leituras e escritas Admin> INSERT INTO mysql_query_rules (username,destination_hostgroup,active,match_digest,apply) -> VALUES -> ('proxysql_user',10,1,'^SELECT.*FOR UPDATE',1), -> ('proxysql_user',11,1,'^SELECT ',1); Query OK, 2 rows affected (0.00 sec) Admin> LOAD MYSQL QUERY RULES TO RUNTIME; SAVE MYSQL QUERY RULES TO DISK; Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.01 sec)

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© 2019 Percona 18 ProxySQL - Features - Load Balance ▪Dividir leituras e escritas [root@localhost ~]# mysql -u proxysql_user -p' Pr0xySQL!' -P 6033 -h 127.0.0.1 -e " INSERT INTO test.t1 VALUES (@@hostname)" [root@localhost ~]# mysql -u proxysql_user -p' Pr0xySQL!' -P 6033 -h 127.0.0.1 -e " SELECT @@hostname, server FROM test.t1" +------------+--------+ | @@hostname | server | +------------+--------+ | node2 | node1 | +------------+--------+ [root@localhost ~]# mysql -u proxysql_user -p' Pr0xySQL!' -P 6033 -h 127.0.0.1 -e " SELECT @@hostname, server FROM test.t1" +------------+--------+ | @@hostname | server | +------------+--------+ | node3 | node1 | +------------+--------+

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© 2019 Percona 19 ProxySQL - Features - Failover

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© 2019 Percona 20 ProxySQL - Features - Failover ▪Replicação • Mysql_replication_hostgroups - Validar a variável read_only no MySQL Admin> INSERT INTO mysql_replication_hostgroups (writer_hostgroup, reader_hostgroup) VALUES (10, 11); Admin> LOAD MYSQL SERVERS TO RUNTIME; SAVE MYSQL SERVERS TO DISK;

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© 2019 Percona 21 ProxySQL - Features - Failover ▪Percona XtraDB Cluster / Galera • Scheduler - Script que roda a cada X milisegundos ▪https://github.com/percona/proxysql-admin-tool ▪Modos • Single Write • Load Balance

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© 2019 Percona 22 ProxySQL - Features - Failover ▪Mysql_galera_hostgroups (proxysql 2.0) • Writer_hostgroup • Backup_writer_hostgroup • Reader_hostgroup • Offline_hostgroup

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© 2019 Percona 23 ProxySQL - Features - Connection Pool

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© 2019 Percona 24 ProxySQL - Features - Connection Pool

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© 2019 Percona 25 ProxySQL - Features - Connection Pool

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© 2019 Percona 26 ProxySQL - Features - Connection Pool

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© 2019 Percona 27 ProxySQL - Features - Connection Pool

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© 2019 Percona 28 ProxySQL - Features - Multiplexing

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© 2019 Percona 29 ProxySQL - Features - Multiplexing

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© 2019 Percona 30 ProxySQL - Features - Multiplexing

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© 2019 Percona 31 ProxySQL - Features - Multiplexing

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© 2019 Percona 32 ProxySQL - Features - Stats

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© 2019 Percona 33 ProxySQL - Features - Stats ▪SHOW TABLES FROM stats; • Stats_mysql_commands_counters - Contador baseado em comandos • Stats_mysql_connection_pool - Conexoes por servidor • Stats_mysql_global - Estatisticas globais • Stats_mysql_processlist - SHOW PROCESSLIST • Stats_mysql_query_digest - Contador agrupado por digest • Stats_mysql_query_rules - Contador baseado nas query rules

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© 2019 Percona 34 ProxySQL - Features - Reescrita de Query

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© 2019 Percona 35 ProxySQL - Features - Reescrita de query ▪stats_mysql_query_digest Admin> SELECT digest, digest_text, sum_time FROM stats_mysql_query_digest ORDER BY sum_time DESC LIMIT 1; +--------------------+-----------------------------------------+----------+ | digest | digest_text | sum_time | +--------------------+-----------------------------------------+----------+ | 0xD69E622A5052289E | SELECT * FROM world.city WHERE Name = ? | 7016461 | +--------------------+-----------------------------------------+----------+ Admin> INSERT INTO mysql_query_rules (rule_id,active,match_pattern, replace_pattern) VALUES (3,1, '^SELECT \* FROM world\.city WHERE Name = (.*)$', 'SELECT Population FROM world.city WHERE Name = \1'); Query OK, 1 row affected (0.00 sec) Admin> LOAD MYSQL QUERY RULES TO RUNTIME; Query OK, 0 rows affected (0.01 sec) Admin> SAVE MYSQL QUERY RULES TO DISK; Query OK, 0 rows affected (0.01 sec)

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© 2019 Percona 36 ProxySQL - Features - Reescrita de query [root@localhost ~]# mysql -u proxysql_user -p' Pr0xySQL!' -P 6033 -h 127.0.0.1 -e "SELECT * FROM world.city WHERE Name = 'São Paulo'" +------------+ | Population | +------------+ | 9968485 | +------------+

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© 2019 Percona 37 ProxySQL - Features - Firewall

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© 2019 Percona 38 ProxySQL - Features - Firewall ▪Bloquear queries - SQL INJECTION! • Original query: SELECT Name FROM world.city WHERE Name = ‘?’ • SQL Injection: ? = São Paulo' OR ID > 0; -- • SELECT Name FROM world.city WHERE Name = 'São Paulo' OR ID > 0; --' Admin> SELECT username, digest, digest_text FROM stats_mysql_query_digest WHERE digest_text LIKE '% OR ID %' ORDER BY first_seen DESC LIMIT 1; +-------------+--------------------+------------------------------------------------------+ | username | digest | digest_text | +-------------+--------------------+------------------------------------------------------+ | application | 0xD8AF41BF32707ABD | SELECT Name FROM world.city WHERE Name = ? OR ID > ? | +-------------+--------------------+------------------------------------------------------+ 1 row in set (0.00 sec)

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© 2019 Percona 39 ProxySQL - Features - Firewall Admin> INSERT INTO mysql_query_rules (rule_id, active, digest, error_msg, apply) VALUES (4,1,'0xD8AF41BF32707ABD','Suspeita de SQL Injection',1); Query OK, 1 row affected (0.00 sec) Admin> LOAD MYSQL QUERY RULES TO RUNTIME;SAVE MYSQL QUERY RULES TO DISK; Query OK, 0 rows affected (0.01 sec) Query OK, 0 rows affected (0.01 sec) [root@localhost ~]# mysql -u application -papp -P 6033 -h 127.0.0.1 -e "SELECT Name FROM world.city WHERE Name = 'São Paulo' OR ID > 0; --' " ERROR 1148 (42000) at line 1: Suspeita de SQL Injection

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© 2019 Percona 40 ProxySQL - Features - Espelhamento de Query

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© 2019 Percona 41 ProxySQL - Features - Mirror ▪Espelhar queries em outros servidores • Testar configurações • Standby Master - Manter buffer pool quente • Testar workload em versões diferentes - Upgrades • Troubleshooting

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© 2019 Percona 42 ProxySQL - Features - Mirror ▪Esquentar buffer pool Admin> INSERT INTO mysql_servers (hostgroup_id, hostname) VALUES (12, 'node4'); Admin> LOAD MYSQL SERVERS TO RUNTIME; SAVE MYSQL SERVERS TO DISK; Admin> SELECT rule_id, match_digest, destination_hostgroup, mirror_hostgroup FROM mysql_query_rules WHERE rule_id=2; +---------+--------------+-----------------------+------------------+ | rule_id | match_digest | destination_hostgroup | mirror_hostgroup | +---------+--------------+-----------------------+------------------+ | 2 | ^SELECT | 11 | NULL | +---------+--------------+-----------------------+------------------+ Admin> UPDATE mysql_query_rules SET mirror_hostgroup=12 WHERE rule_id=2; Admin> LOAD MYSQL QUERY RULES TO RUNTIME; Admin> SAVE MYSQL QUERY RULES TO DISK;

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© 2019 Percona 43 ProxySQL - Features - Query Cache

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© 2019 Percona 44 ProxySQL - Features - Query Cache ▪Cache de queries baseado em TTL [root@localhost ~]# sysbench --num-threads=16 --max-requests=0 --max-time=60 --test=/usr/share/doc/sysbench/tests/db/oltp.lua --mysql-user=application --mysql-password=app --mysql-db=test --mysql-host=127.0.0.1 --mysql-port=6033 --oltp-table-size=10000 --oltp-read-only=on --oltp-skip-trx=on --oltp-point-selects=100 --oltp-simple-ranges=1 --oltp-sum-ranges=1 --oltp-order-ranges=1 --oltp-distinct-ranges=1 run | grep 'read/write requests' read/write requests: 105664 (1744.81 per sec.) Admin> SELECT count_star,sum_time,hostgroup,digest,digest_text FROM stats_mysql_query_digest ORDER BY sum_time DESC; +--------------+-----------+-----------+--------------------+-----------------------------------------------------------------------+ | count_star | sum_time | hostgroup | digest | digest_text | +--------------+-----------+-----------+--------------------+-----------------------------------------------------------------------+ | 100200 | 459147213 | 11 | 0xBF001A0C13781C1D | SELECT c FROM sbtest1 WHERE id=? | | 1002 | 6533622 | 11 | 0xF7D3CD60704822A0 | SELECT DISTINCT c FROM sbtest1 WHERE id BETWEEN ? AND ?+? ORDER BY c | | 1002 | 6061540 | 11 | 0x877EEAAFADF3DDF2 | SELECT c FROM sbtest1 WHERE id BETWEEN ? AND ?+? ORDER BY c | | 1002 | 5905677 | 11 | 0xAF7A51977DD56217 | SELECT c FROM sbtest1 WHERE id BETWEEN ? AND ?+? | | 1002 | 5321376 | 11 | 0x3E268CF3E75DB831 | SELECT SUM(K) FROM sbtest1 WHERE id BETWEEN ? AND ?+? | +--------------+-----------+-----------+--------------------+-----------------------------------------------------------------------+

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© 2019 Percona 45 ProxySQL - Features - Query Cache Admin> INSERT INTO mysql_query_rules (rule_id,active,digest,cache_ttl,apply) VALUES (5,1, '0xBF001A0C13781C1D' ,2000,1); Query OK, 1 row affected (0.00 sec) Admin> LOAD MYSQL QUERY RULES TO RUNTIME;SAVE MYSQL QUERY RULES TO DISK; [root@localhost ~]# sysbench --num-threads=16 --max-requests=0 --max-time=60 --test=/usr/share/doc/sysbench/tests/db/oltp.lua --mysql-user=application --mysql-password=app --mysql-db=test --mysql-host=127.0.0.1 --mysql-port=6033 --oltp-table-size=10000 --oltp-read-only=on --oltp-skip-trx=on --oltp-point-selects=100 --oltp-simple-ranges=1 --oltp-sum-ranges=1 --oltp-order-ranges=1 --oltp-distinct-ranges=1 run | grep 'read/write requests' read/write requests: 238680 (3956.42 per sec.) Admin> SELECT count_star,sum_time,hostgroup,digest,digest_text FROM stats_mysql_query_digest ORDER BY sum_time DESC; +------------+-----------+-----------+--------------------+----------------------------------------------------------------------+ | count_star | sum_time | hostgroup | digest | digest_text | +------------+-----------+-----------+--------------------+----------------------------------------------------------------------+ | 140512 | 632180517 | 11 | 0xBF001A0C13781C1D | SELECT c FROM sbtest1 WHERE id=? | | 3372 | 18351846 | 11 | 0xF7D3CD60704822A0 | SELECT DISTINCT c FROM sbtest1 WHERE id BETWEEN ? AND ?+? ORDER BY c | | 3372 | 17739689 | 11 | 0x877EEAAFADF3DDF2 | SELECT c FROM sbtest1 WHERE id BETWEEN ? AND ?+? ORDER BY c | | 3372 | 17709660 | 11 | 0xAF7A51977DD56217 | SELECT c FROM sbtest1 WHERE id BETWEEN ? AND ?+? | | 3372 | 15646777 | 11 | 0x3E268CF3E75DB831 | SELECT SUM(K) FROM sbtest1 WHERE id BETWEEN ? AND ?+? | | 196688 | 0 | -1 | 0xBF001A0C13781C1D | SELECT c FROM sbtest1 WHERE id=? | +------------+-----------+-----------+--------------------+----------------------------------------------------------------------+

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© 2019 Percona 46 ProxySQL - Features - GTID Leituras Consistentes

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© 2019 Percona 47 ProxySQL 2.0 - GTID Leituras Consistentes ▪Stale reads ▪Requer modificações na aplicação • WAIT_FOR_EXECUTED_GTID_SET • Verificar multiplos slaves • Nenhum slave em sync

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© 2019 Percona 48 ProxySQL 2.0 - GTID Leituras Consistentes ▪MySQL 5.7.5+ - session_track_gtids ▪Verificar GTID no slave? • Pull - Verificar slaves em intervalos • Push - Slaves notificam o ProxySQL

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© 2019 Percona 49 ProxySQL 2.0 - GTID Leituras Consistentes ▪ProxySQL Binlog Reader • https://github.com/sysown/proxysql_mysqlbinlog

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© 2019 Percona 50 ProxySQL 2.0 - GTID Leituras Consistentes

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© 2019 Percona 51 ProxySQL 2.0 - GTID Leituras Consistentes 01:29:54.081552 IP (tos 0x0, ttl 64, id 25059, offset 0, flags [DF], proto TCP (6), length 100) marcelo-altmann-PU-replication-1.lxd.opsession-prxy > marcelo-altmann-PU-proxysql-1.lxd.41726: Flags [P.], cksum 0x5dfd (incorrect -> 0xc8cb), seq 1:49, ack 1, win 510, options [nop,nop,TS val 792525047 ecr 430181741], length 48 0x0000: 4500 0064 61e3 4000 4006 7b0a ac10 025f E..da.@.@.{...._ 0x0010: ac10 0327 0ceb a2fe c48c 6725 bf6c 4c56 ...'......g%.lLV 0x0020: 8018 01fe 5dfd 0000 0101 080a 2f3c f8f7 ....]......./<.. 0x0030: 19a4 0d6d 5354 3d64 6131 6262 3030 302d ...m ST=da1bb000- 0x0040: 3563 3963 2d31 3165 392d 3965 6537 2d30 5c9c-11e9-9ee7-0 0x0050: 3031 3633 6566 6162 6163 303a 312d 3535 0163efabac0:1-55 0x0060: 3239 390a 299. mysql> SHOW GLOBAL VARIABLES LIKE 'gtid_executed'; +---------------+----------------------------------------------+ | Variable_name | Value | +---------------+----------------------------------------------+ | gtid_executed | da1bb000-5c9c-11e9-9ee7-00163efabac0:1-55299 | +---------------+----------------------------------------------+ 1 row in set (0.00 sec)

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© 2019 Percona 52 ProxySQL 2.0 - GTID Leituras Consistentes 01:30:26.066393 IP (tos 0x0, ttl 64, id 25060, offset 0, flags [DF], proto TCP (6), length 94) marcelo-altmann-PU-replication-1.lxd.opsession-prxy > marcelo-altmann-PU-proxysql-1.lxd.41726: Flags [P.], cksum 0x5df7 (incorrect -> 0x93b9), seq 49:91, ack 1, win 510, options [nop,nop,TS val 792557032 ecr 430181741], length 42 0x0000: 4500 005e 61e4 4000 4006 7b0f ac10 025f E..^a.@.@.{...._ 0x0010: ac10 0327 0ceb a2fe c48c 6755 bf6c 4c56 ...'......gU.lLV 0x0020: 8018 01fe 5df7 0000 0101 080a 2f3d 75e8 ....]......./=u. 0x0030: 19a4 0d6d 4931 3d64 6131 6262 3030 3035 ...m I1=da1bb0005 0x0040: 6339 6331 3165 3939 6565 3730 3031 3633 c9c11e99ee700163 0x0050: 6566 6162 6163 303a 3535 3330 300a efabac0:55300. mysql> SHOW GLOBAL VARIABLES LIKE 'gtid_executed'; +---------------+----------------------------------------------+ | Variable_name | Value | +---------------+----------------------------------------------+ | gtid_executed | da1bb000-5c9c-11e9-9ee7-00163efabac0:1-55300 | +---------------+----------------------------------------------+ 1 row in set (0.00 sec)

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© 2019 Percona 53 ProxySQL 2.0 - GTID Leituras Consistentes 01:30:44.388537 IP (tos 0x0, ttl 64, id 25061, offset 0, flags [DF], proto TCP (6), length 61) marcelo-altmann-PU-replication-1.lxd.opsession-prxy > marcelo-altmann-PU-proxysql-1.lxd.41726: Flags [P.], cksum 0x5dd6 (incorrect -> 0xa8c8), seq 91:100, ack 1, win 510, options [nop,nop,TS val 792575354 ecr 430213726], length 9 0x0000: 4500 003d 61e5 4000 4006 7b2f ac10 025f E..=a.@.@.{/..._ 0x0010: ac10 0327 0ceb a2fe c48c 677f bf6c 4c56 ...'......g..lLV 0x0020: 8018 01fe 5dd6 0000 0101 080a 2f3d bd7a ....]......./=.z 0x0030: 19a4 8a5e 4932 3d35 3533 3031 0a ...^ I2=55301. mysql> SHOW GLOBAL VARIABLES LIKE 'gtid_executed'; +---------------+----------------------------------------------+ | Variable_name | Value | +---------------+----------------------------------------------+ | gtid_executed | da1bb000-5c9c-11e9-9ee7-00163efabac0:1- 55301 | +---------------+----------------------------------------------+ 1 row in set (0.00 sec)

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© 2019 Percona 54 Caso de uso

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© 2019 Percona 55 ProxySQL - Caso de uso ▪Wordpress - 20 clientes conectados / 5K requests ▪Teste 1 - Conectando somente em 1 servidor ▪Teste 2 - Distribuindo carga entre 3 servidores ▪Teste 3 - Realizando cache das top 20 queries

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© 2019 Percona 56 ProxySQL - Caso de uso

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© 2019 Percona 57 ProxySQL - Caso de uso

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© 2019 Percona 58 Perguntas?

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