June 19, 2013

Post: Is Synchronous Replication right for your app?

…record at once.  But what will actually happen to the clients who try to update the same row …t need to update the parent group row so often? INSERT INTO users_groups (user_id, group_id,…tradeoffs we take when deploying conventional stand-alone MySQL Innodb with asynchronous slaves.  We may not think …

Post: Follow these basics when migrating to Percona XtraDB Cluster for MySQL

MySQL is a hot thing …within the cluster. Also, at the time of this writing…leave them behind. Lastly, once that bug above is …, you should consider moving to InnoDB altogether. There are very…is to avoid collisions when INSERTs are happening on not only… async master can use ROW based binlog format as …

Post: Virident vCache vs. FlashCache: Part 2

…, 10M rows each) …once again, vCache at 10% outperforms FlashCache atmysql.sock ­­–mysql­-table­-engine=innodb ­­\ –oltp­-read­-only=off run The base MySQL configuration (configuration A) appears below: #####fixed innodb options innodb_file_format = barracuda innodb… = 4M bulk_insert_buffer_size =…

Post: Some little known facts about Innodb Insert Buffer

Innodb uses insert buffer to “cheat” and not to update index leaf pages when at once… allows insert buffer to survive transaction commits and even MySQLrows we see in performance stats, for example to understand when insert buffer merge will be completed. The “inserts” is number of inserts to insert

Post: Heikki Tuuri Innodb answers - Part I

at once. Q13: Is there any IO concurrency control – how many random and sequential read aheads can be happening at…use row-…MySQL 5.1 Q15: How frequently does Innodb fuzzy checkpointing is activated HT: InnoDBINSERT with multiple values? We build up INSERTS on our clients and insert values 50 or so at

Post: High-Performance Click Analysis with MySQL

InnoDB?  Data clustering. InnoDB‘s primary keys define the physical order rows are stored in.  That lets you choose which rows…to-scale database server for the initial insertion, because you can write CSV files with…read a lot of rowsMySQL can’t handle too many of those at once. Aside from star …

Post: MySQL Users Conference - Innodb

MySQLInnodb. Innodb Storage Engine was covered in a lot of talks, many of them done by Innodbinsert is single value insert or the number of values in the bulk is known you can allocate all values at once

Post: InnoDB Full-text Search in MySQL 5.6 (part 1)

… engine is MyISAM rather than InnoDB. Loading the data was done via a simple Perl script, inserting one row at a time with AutoCommit… actually matter at table creation time. Once I’ve got a table with an explicit FTS_DOC_ID column, however, MySQL apparently has…) mysql> insert into dir_test_innodb (full_name, details) SELECT reverse(full_name), details FROM dir_test_innodb WHERE id < 500000; Query OK, 245051 rows

Post: Innodb row size limitation

…, PRIMARY KEY (id) ) Engine=InnoDB; Now you insert some test data into it: mysql> INSERT INTO example -> VALUES ( ->…always, as this is not evaluated at table definition, but at row insertion. You may just have a… forces you to read/write more data at once, while one of the interesting things about…