We can store frequently accessed data into a cache. The client can query the cache first instead of visiting the database directly. If there is a cache miss, the client can query from the database. Caches like Redis store data in memory, so the data access is much faster than the data...
one of the tasks A needs to be executed one message at a time; the other task B is a large concurrent task and hopes to be executed as soon as possible. In the default mode, tasks A and B share the same user queue; in this case, the following scenario occurs: Due to ...
Figure 33 Example plan output highlighting the TQ (table queue) column for producers and consumers Data redistribution In the example above two large tables CUSTOMERS and SALES are involved in the join. In order to process this join in parallel, a redistribution of rows becomes necessary between ...
The base part also defines the queue. This is an array which holds 10 latest records selected. It is initialized in the base part with the id of the random track just selected The recursive part of the CTE joins the previous record with the table, making sure that no record from the la...
When using EXPLAIN PLAN with parallel queries, the database compiles and executes one parallel plan. This plan is derived from the serial plan by allocating row sources specific to the parallel support in the QC plan. The table queue row sources (PX Send and PX Receive), the granule iterato...
Benefrancis / system-design-101 Public forked from ByteByteGoHq/system-design-101 Notifications You must be signed in to change notification settings Fork 0 Star 0 Explain complex systems using visuals and simple terms. Help you prepare f...
Figure 33 Example plan output highlighting the TQ (table queue) column for producers and consumers Data redistribution In the example above two large tables CUSTOMERS and SALES are involved in the join. In order to process this join in parallel, a redistribution of rows becomes necessary between ...
URN stands for Uniform Resource Name. It uses the urn scheme. URNs cannot be used to locate a resource. A simple example given in the diagram is composed of a namespace and a namespace-specific string. If you would like to learn more detail on the subject, I would recommendW3C’s clar...
Figure 33 Example plan output highlighting the TQ (table queue) column for producers and consumers Data redistribution In the example above two large tables CUSTOMERS and SALES are involved in the join. In order to process this join in parallel, a redistribution of rows becomes necessary betwe...
If you would like to learn more detail on the subject, I would recommend W3C’s clarification. CI/CD CI/CD Pipeline Explained in Simple Terms Section 1 - SDLC with CI/CD The software development life cycle (SDLC) consists of several key stages: development, testing, deployment, and maintena...