output. in linux, use more and less. -- No-pager does not use the page splitter to display query output. -P, -- password [= name] enter the password-W, -- pipe Use named pipes to connect to server. -P, -- port = # Set port -- prompt = name set mysql prompt -- protocol = name set the protocol used-q, -- quick does not cache query results, print each row in sequence. If the output is suspended, the server slows down and mysql does not use historical files. Www.2cto.com-r, -- raw writes column val
of the function to TRUE (boolean.When you use this method, you will use the object name to execute the operation command instead of the User Wizard mode, that is, you will execute the database operation in the following ways:$ DB1-> query ();$ DB1-> result ();Etc...Instead:$ This-> db-> query ();$ This-> db-> result ();Etc...Reconnect/keep the connection validWhen you are performing some heavyweight PHP operations (such as image processing), if the i
is allowed.
MYSQL_OPT_NAMED_PIPE
Unused
Connect to the MySQL server on the NT platform using the named pipe.
MYSQL_OPT_PROTOCOL
Unsigned int *
The protocol type to use. It should be one of the enumerated values of mysql_protocol_type defined in mysql. h.
MYSQL_OPT_READ_TIMEOUT
Unsigned int *
Timeout for reading information from the server (currently only valid for TCP/IP connections on Windows ).
MYSQL_OPT_RECONNECT
My_bool *
If the co
After a MySQL version of MySQL 5.x, the feature of MySQL to automatically disable idle connections has been modified. For example, the idle connection times out (the default value is 28000 seconds and 8 hours ), re-initiated Reconnect reconnection requests will not be accepted, and new connections need to be re-established, which causes the re-Connection Mechanism of the SER to be unable to work normally: the SER will only perform database operations
# Service o2cb status // view service status web1)
Driver for "configfs": Loaded
Filesystem "configfs": Mounted
Driver for "ocfs2_dlmfs": Loaded
Filesystem "ocfs2_dlmfs": Mounted
Checking O2CB cluster ocfs2: Online
Heartbeat dead threshold = 31
Network idle timeout: 30000
Network keepalive delay: 2000
Network reconnect delay: 2000
Checking O2CB heartbeat: Not active
Step 5: Format and mount the File System
Format the file system first. H
Reconnectingwebsocket is a small JavaScript library that encapsulates the WebSocket API, which provides a mechanism to automatically reconnect when a connection is broken.Simply take the following:WS = New WebSocket (' ws://... ');Replace with:WS = New Reconnectingwebsocket (' ws://... ');See: Https://github.com/fc653074701/reconnecting-websocketOr://interval sends the heartbeat packet data to the server, the server sends back the heartbeat packet res
If the customer service personnel log in, the customer service is displayed online on the page. after the customer logs in, you can choose a customer service consulting service, regardless of the customer service, user, and refresh page, to reconnect and match. I am not familiar with swoole. My first instinct is to find a way to connect the current ws when logging on... if the customer service personnel logs in, the customer service is displayed onlin
I initially opened a socket port. after a while, I disabled the php script (the socket port was not closed). when the script was re-run, how can I avoid repeated opening of socket ports with the same ip address and port ?? And how to reconnect to this port... I initially opened a socket port. after a while, I disabled the php script (the socket port was not closed). when the script was re-run, how can I avoid repeated opening of socket ports with the
router, STA1 needs to reconnect to the wireless router (the entered key is the same as the key set for the wireless router), and the connection will be successful in a moment.
(6) Open IE, enter the IP address 192.168.1.8, log on to the wireless router Management page again, and click the "DHCP service" option under "DHCP server" on the left, click "do not enable" and save, as shown in figure 8. Click "restart vro" under "System Tools" to restart the
current WiFi device iswifienabled () determine if the WiFi device is turned on pingsupplicant () Ping, and the ping operation of the PC is the same ressociate () Reconnect the WiFi network, even if the network is already connected to the reconnect () reconnect a non-connected WiFi network removenetwork () remove a network saveconfiguration () Leave a configurati
Mysql,wait_timeout will be set to the value of interactive_timeout. If we do not do anything within the wait_timeout time, we will be prompted to time out again, which requires the MySQL client to reconnect. By default, both values are 28800 (8h), and the two value is normally set to 1000s.7) Lock_wait_timeoutGets the time-out period for metadata locks. This is suitable for all tables except the system tables (MySQL library).Different fromInnodb_lock
scene, dig deeper. Plan to change the implementation back to the original, follow-up further verification. Find the reason to update here again.Final CONCLUSION Update!With an in-depth reading of Apache's ZK forum and source code, there is an important message.The above mentioned disconnection is divided into recoverble and unrecoverble two scenarios, the difference is mainly based on the duration of the session, all client operations including watch are associated with the session, When the se
broken, re-connected problems, or self-change program bar to add abnormal automatic reconnection, The following is the InitDataSource key code, the simple notation of other database connections is not written:// if it is a reconnection, get the connection to the connection pool Try { = datasource.getconnection (); Conn.setautocommit (false); Catch (SQLException e) { e.printstacktrace ();
[Core products].
In"Script organization program"In the pane, note the unique icon used to distinguish the nameset from the script command or computing member.
In"Computing tools"In the pane"Metadata"Tab, expand"Product","Category","Member"And"All products".
If you cannot"Computing tools"To view any metadata, click"Reconnect". If this operation fails, you may
1. Basic Configuration
When unicorn is configured, there are two cases:
preload_app truepreload_app false
If preload_app is false, the unicorn master does not pre-load the entire rails app environment, and every worker executes the entire rails app.
When preload_app is true, the master of Unicorn loads the rails app environment in advance. In the case of copy_on_write_friendly, each worker replicates data from the master when executing the write operation (Resource Saving ).
If prelad_app is tru
multiple available wireless networks, double-click the TP-LINK to connect to the wireless router, then the connection is successful.(2) Open IE and enter the IP address 192.168.1.1 (the default lan ip address of the wireless router ).(3) log on to the wireless router Management Interface (username: Admin, password: Admin ).Click the "LAN port settings" option under "Network Parameters" on the left side of the interface, set "ip address" to 192.168.1.8, and save it, as shown in figure 4.(4) Open
I recently tested data processing performance using storm.
Topology Structure: spout outputs 0.8 million data (in CSV format); bolt1 parses CSV data and splits each information segment; bolt2 is summarized by a field in bolt1, and is written into the database after the count is accumulated (loading Trigger frequency: 60 s ).
Concurrency configuration: spout task (1) Executor (3); bolt1 excutor/task (16); bolt2 excutor/task (8 );
Workers (8); storm slot (8)
Hardware configuration: 8 CPU, 16g
from net | NULL 2.2 interactive_timeout wait_timeout
Let's take a look at the official documentation. From the documentation, wait_timeout and interactive_timeout both indicate inactive connection timeout times, when the connection line starts, wait_timeout is set to one of the two values based on the interaction mode or non-interaction mode. If we runmysql -uroot -pAfter logging on to mysql, wait_timeout is set to the value of interactive_timeout. If we do not perform any operation within the
use historical files.-R, -- raw // write column values without escape conversion. It is usually used in combination with the -- batch option.-- Reconnect // If the connection is disconnected from the server, the system automatically tries to reconnect. Disable reconnection and use -- disable-reconnect.-S, -- silent // one line of output, separated by tabs-S, --
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