tokudb存储引擎，你可以把它看做是archive存储引擎的升级版，它拥有了密集压缩，并且支持事务。压缩比：EngineCompressionTablesize[MB]InnoDBnone2272InnoDBKEY
tokudb存储引擎，你可以把它看做是archive存储引擎的升级版，它拥有了密集压缩，并且支持事务。
压缩比：
EngineCompressionTable size [MB]
InnoDB none 2272
InnoDB KEY_BLOCK_SIZE=8 1144
InnoDB KEY_BLOCK_SIZE=4 584
MyISAM none 1810
MyISAM compressed with myisampack 809
Archive default 211
TokuDB ZLIB 284
TokuDB LZMA 208
特性：
FeatureArchiveMyISAM (compressed)InnoDBTokuDB
only INSERTsnoyesyes
Transactionsnonoyesyes
nonoyesyes
Indexesnoyesyesyes
Online DDLnonoyes *yes **
MariaDB10，已经内嵌了TokuDB存储引擎，安装超简单，如下：
调优：
Configuration: what’s really important
As noted by Vadim long ago, “Tuning of TokuDB is much easier than InnoDB, there’re only a few parameters to change, and actually out-of-box things running pretty well“:
TokuDB调优比InnoDB简单的多，只是有一些参数变化，，或者你直接使用默认参数，也运行的良好。
MariaDB [(none)]> show variables like '%tokudb%'; +---------------------------------+-------------+ | Variable_name | Value | +---------------------------------+-------------+ | tokudb_alter_print_error | OFF | | tokudb_analyze_time | 5 | | tokudb_block_size | 4194304 | | tokudb_cache_size | 120926208 | | tokudb_checkpoint_lock | OFF | | tokudb_checkpoint_on_flush_logs | OFF | | tokudb_checkpointing_period | 60 | | tokudb_cleaner_iterations | 5 | | tokudb_cleaner_period | 1 | | tokudb_commit_sync | ON | | tokudb_create_index_online | ON | | tokudb_data_dir | | | tokudb_debug | 0 | | tokudb_directio | OFF | | tokudb_disable_hot_alter | OFF | | tokudb_disable_prefetching | OFF | | tokudb_disable_slow_alter | OFF | | tokudb_empty_scan | rl | | tokudb_fs_reserve_percent | 5 | | tokudb_fsync_log_period | 0 | | tokudb_hide_default_row_format | ON | | tokudb_init_flags | 11403457 | | tokudb_killed_time | 4000 | | tokudb_last_lock_timeout | | | tokudb_load_save_space | ON | | tokudb_loader_memory_size | 100000000 | | tokudb_lock_timeout | 4000 | | tokudb_lock_timeout_debug | 1 | | tokudb_log_dir | | | tokudb_max_lock_memory | 15115776 | | tokudb_pk_insert_mode | 1 | | tokudb_prelock_empty | ON | | tokudb_read_block_size | 65536 | | tokudb_read_buf_size | 131072 | | tokudb_read_status_frequency | 10000 | | tokudb_row_format | tokudb_zlib | | tokudb_tmp_dir | | | tokudb_version | 7.1.6 | | tokudb_write_status_frequency | 1000 | +---------------------------------+-------------+ 39 rows in set (0.01 sec)
