transactions

问题 Is it ok to run whole PHP application in a MySQL transaction? Is there any side effects? I mean something like this: Client requests A.php A.php -> start mysql transaction A.php -> execute and process request A.php -> commit mysql transaction send requested data to client 回答1: I would not call this running the whole PHP application in one transaction , but rather a PHP script that treats each request in a separate transaction. That is fine, as long as you are aware of transaction related

问题 I am trying the transaction for sequelize in noodejs. I am using postgres as my database. When I call the testDel the transaction get autocommitted in the testDel. Even if transaction autocommit already set to false. If I pass the variable t from the Db.transaction to testDel, then it will wait for the manual commit / rollback. Can I do without passing t into function? It make coding very complicated. The coding is as following: Db.transaction({autocommit: false}).then((t) => { args =

问题 I am trying to integrate SDN with my spring-hibernate app. With minimal <neo4j:config> and <neo4j:repositories> configuration, it works fine. But when i include either @Neo4jTransactional or write a custom transactionManager i get an infinite loop in creating nodeEntityStateFactory bean in the intercept method in ConfigurationClassEnhancer class. Here is the exception i get. java.lang.IllegalStateException: Singleton 'nodeEntityStateFactory' isn't currently in creation Here is the intercept

问题 I am developing a sample application with PayUMoney Transaction. The app functions well. But I am looking for redirecting the page to an Activity after the successful transaction. I am using payUMoney SDK Does anyone gone through this? Please guide me.. any kind of help appreciated. Thanks in advance 回答1: I faced the similar issue.I assume you have integrated payUMoney using sdk. Your sdk will be having a WebViewActivity which is used to redirect user to success/failure screen after

问题 I've always considered that there were no isolation within a single transaction. For example if I have 2 methods M1 and M2, M1 update X in database and M2 select X or a set containing X. If both method belongs to the same transaction and M2 is executed after M1: Does M2 always seen M1 update whatever the type of operation, the RDBMS or the isolation level is ? If no, can someone explain in details the different possible behavior according to associated criteria 回答1: In the situation described

问题 This might be typical Java 7 boilerplate for accessing some Neo4j data. Is there any mechanism in existence whereby you can set up the transaction to automatically fail and rollback based upon a timeout? try (Transaction tx = graphdb.beginTx()) { Node node = // Get some Nodes ... Iterable<Relationship> rels = node.getRelationships(...); for (Relationship rel : rels) { // Oh no! This is a super-node with a billion Relationships! } tx.success(); return data; } I guess just have int count = 0

问题 If I have an icon, 'icon.png' that will be served from the CDN. It is 1K and cached for long time. 1M users hit it from every location in the world. Q1: because the request is cached 304 on client side will Azure bill me for request when the CLIENT visit my second page and same icon.png served from the cache? in the bill I will have 1M transactions OR 1M transactions MULTIPLY by Page view? Please share average price what you pay for 10000 daily users let say 10 page views per user I need to

问题 I'm trying to wrap my ahead around some strange errors, where code that seemingly should run as one transaction does not. I'll try to get all the relevant parts down, but it's quite a lot so. The project contains both Spring and EJB, so I'm not really sure if one of them is actually used here, or both. The Spring configuration contains this: <jee:jndi-lookup id="platformTransactionManager" jndi-name="java:appserver/TransactionManager" resource-ref="false" expected-type="javax.transaction

问题 I'm reading about how do transactions work in python's MySQLdb . In this tutorial, it says that: In Python DB API, we do not call the BEGIN statement to start a transaction. A transaction is started when the cursor is created. So a following line: cur = con.cursor() starts a transaction implicitly. It also says, that: We must end a transaction with either a commit() or a rollback() method. Do I understand it correctly, that MySQLdb uses transactions always and there's no way to turn this

问题 Titan 1.0 [Berkeley+ Remote Elastic Search] we are using this combination of Titan. Following is the properties file - storage.backend=berkeleyje storage.directory=D:/other-projects/graph-db/titan/enron-tk3/db/berkeley index.search.backend=elasticsearch index.search.index-name=akshayatitan index.search.hostname=localhost index.search.elasticsearch.client-only=true index.search.elasticsearch.local-mode=false We are only using Mixed Index. Now we add a node with few properties through Java code