data is processed in

This is the ajax code {code ...} this is the code controlled by the ci framework {code ...} no id value exists in echo, and no reason can be found .... is it because the data is no longer in the past? I can use another deleted ajax function without redirecting to the Control

In this case, on the PHP side, data on the subserver is retrieved every 10 seconds. if the data is written to the database every time, the number of records is recorded, and the final data volume

Bytes/ Data skew refers to map/reduceProgramDuring execution, most reduce nodes are executed, but one or more reduce nodes run slowly, resulting in a long processing time for the entire program, this is because the number of keys of a key is much greater than that of other keys (sometimes hundreds of times or thousands of times). The reduce node where the key

Because the user record is too much (3 million), the paging query becomes very slow, how to optimize the statement or index? Do you have any optimization plan? Supplemental content:Thank you for your proposal, I see very inspired, but the combination of my situation is more special, not very applicable. The details are as follows:1 when the user opens the participation record page, it

What is a data warehouse, and what is the difference between a databaseDataWarehouseis a subject-oriented (Subject oriented), integrated (integrate), A relatively stable (non-volatile), data collection that reflects historical changes (timeVariant) to support management decisions. (1) topic-oriented: Index

Recently an asset management system project, one of which is the client sends the collected data to the service side, the server is Django write, the client needs to use the Rrequests module to simulate sending requestsSuppose that the data sent is this:data = {' status ': T

Tags: col program configuration SQL query field positioning Rod AC MVCThese days encountered two problems, are very wonderful, distressed for three days, the final positioning out.Problem one, inserting data through PL/SQL developer to a remote Oracle database server, querying data through PL/SQL developer queries, but not data through remote Oracle Sqlplus The a

As far as I am concerned, PHP uses Memache or Redis cache data, when the data has updated data, according to the label to clear out the data, then there is a set of automatic update strategy? Reply content: As far as I am concerned, PHP uses Memache or Redis cache

Before discussing this issue, it is necessary to understand the meaning of model-driven and data-driven two words. Exactly what is model driven. From the perspective of understanding the world, we understand the system, etiquette, morals and so on, basically can be understood as a model, through these models, we can clearly understand what

If the file data generated in the system is too long and then automatically truncated, what is the cause? This small editor has encountered problems caused by the loss of post data, let's take a look. If the file data generated in the system

This course is a basic course for Big data engineers and cloud computing engineers , as well as a course that all computer professionals must master.Without mastering data structures and algorithms, you will find it difficult to master efficient, professional processing tools, and more difficult to handle complex large data