handled. System variable Handled autocommit VitessAware client_found_rows VitessAware skip_query_plan_cache VitessAware tx_read_only VitessAware transaction_read_only VitessAware sql_select_limit VitessAware max_insert_delayed_threads NoOp multi_range_count NoOp net_buffer_length NoOp new NoOp query_cache_type NoOp query_cache_wlock_invalidate NoOp query_prealloc_size NoOp sql_buffer_result NoOp transaction_alloc_block_size Review page for more guidance. As you work in a package, you can run just the unit tests for that package by running go test from within that package. When you’re ready to test the whole system, run

handled. System variable Handled autocommit VitessAware client_found_rows VitessAware skip_query_plan_cache VitessAware tx_read_only VitessAware transaction_read_only VitessAware sql_select_limit VitessAware max_insert_delayed_threads NoOp multi_range_count NoOp net_buffer_length NoOp new NoOp query_cache_type NoOp query_cache_wlock_invalidate NoOp query_prealloc_size NoOp sql_buffer_result NoOp transaction_alloc_block_size Review page for more guidance. As you work in a package, you can run just the unit tests for that package by running go test from within that package. When you’re ready to test the whole system, run

handled. System variable Handled autocommit VitessAware client_found_rows VitessAware skip_query_plan_cache VitessAware tx_read_only VitessAware transaction_read_only VitessAware sql_select_limit VitessAware max_insert_delayed_threads NoOp multi_range_count NoOp net_buffer_length NoOp new NoOp query_cache_type NoOp query_cache_wlock_invalidate NoOp query_prealloc_size NoOp sql_buffer_result NoOp transaction_alloc_block_size Review page for more guidance. As you work in a package, you can run just the unit tests for that package by running go test from within that package. When you’re ready to test the whole system, run

handled. System variable Handled autocommit VitessAware client_found_rows VitessAware skip_query_plan_cache VitessAware tx_read_only VitessAware transaction_read_only VitessAware sql_select_limit VitessAware max_insert_delayed_threads NoOp multi_range_count NoOp net_buffer_length NoOp new NoOp query_cache_type NoOp query_cache_wlock_invalidate NoOp query_prealloc_size NoOp sql_buffer_result NoOp transaction_alloc_block_size Review page for more guidance. As you work in a package, you can run just the unit tests for that package by running go test from within that package. When you’re ready to test the whole system, run

export PATH=$PATH:/usr/local/go/bin Tip: With Ubuntu 19.10 and later, you can also install the package golang-go via apt. Be careful doing this on older versions, as you may end up with an older version Review page for more guidance. As you work in a package, you can run just the unit tests for that package by running go test from within that package. When you’re ready to test the whole system, run of serving a very large number of such ids because values are cached and served out of memory. The cache value is configurable. The VSchema allows you to associate a column of a table with the sequence

Review page for more guidance. As you work in a package, you can run just the unit tests for that package by running go test from within that package. When you’re ready to test the whole system, run next_idx(time_next , epoch) ) comment 'vitess_message ,vt_ack_wait=30,vt_purge_after=86400,vt_batch_size=10,vt_cache_size=10000,vt_poller_interval=30' The application-related columns are as follows: • id: can be any (1 day). • vt_batch_size=10: Send up to 10 messages per RPC packet. • vt_cache_size=10000: Store up to 10000 messages in the cache. If the demand is higher, the rest of the items will have to wait for the

Review page for more guidance. As you work in a package, you can run just the unit tests for that package by running go test from within that package. When you’re ready to test the whole system, run next_idx(time_next , epoch) ) comment 'vitess_message ,vt_ack_wait=30,vt_purge_after=86400,vt_batch_size=10,vt_cache_size=10000,vt_poller_interval=30' The application-related columns are as follows: • id: can be any (1 day). • vt_batch_size=10: Send up to 10 messages per RPC packet. • vt_cache_size=10000: Store up to 10000 messages in the cache. If the demand is higher, the rest of the items will have to wait for the

handled. System variable Handled autocommit VitessAware client_found_rows VitessAware skip_query_plan_cache VitessAware tx_read_only VitessAware transaction_read_only VitessAware sql_select_limit VitessAware max_insert_delayed_threads NoOp multi_range_count NoOp net_buffer_length NoOp new NoOp query_cache_type NoOp query_cache_wlock_invalidate NoOp query_prealloc_size NoOp sql_buffer_result NoOp transaction_alloc_block_size Review page for more guidance. As you work in a package, you can run just the unit tests for that package by running go test from within that package. When you’re ready to test the whole system, run

was due to the code not being used rather than a security fix. 1: MySQL handshake Vitessʼs mysql package implements a function that computes the hash of a mysql password using SHA1. SHA1 has been broken https://github.com/vitessio/vitess/pull/12999 18 Vitess Security Audit, 2023 In the case of Vitessʼs mysql package, SHA1 is used to hash a password which we consider security sensitive data. We consider this a security sqlutils Severity Informational Fixed in: https://github.com/vitessio/vitess/pull/12929 The sqlutils package contains an SQL Injection vulnerability. The root cause of the vulnerability is that sqlutils will

performace • java < go < c/c++ Vitess Features • dynamic resharding • auto-failover • row-cache • limit inefficiency SQL • more client connection • replication lag optimization • multi data Filter • Backup • Restore • Diffs • Row Limit • Kill Timeout SQL • Query blacklisting • row cache • more stats & monitor Vttablet Structure Vitess Resharding • read scaling up ? —> replica