postgresql performance comparison

, making it more extensive application scenarios, for example, in addition to INNODB suitable for transaction processing scenarios, MyISAM suitable for static data query scenarios.Third, in general, the open source database is not very perfect, the business database Oracle in terms of architecture and functionality is still a lot better.From the application scenario, PG is more suitable for rigorous enterprise applications (such as finance, telecommunications, ERP, CRM), while MySQL is more suit

Performance Comparison of Different Java compression algorithms and java Performance Comparison This article will compare the performance of several common compression algorithms. The results show that some algorithms can still work normally under extremely demanding CPU res

Performance Comparison between c ++ 11 multithreading and POSIX multithreading, and posix Performance Comparison Code structure Code Description 1. test. cpp /************************************************************************* > File Name: test.cpp > Author: wangzhicheng > Mail: 2363702560@qq.com >

This article focuses on the following aspects:Oracle,MySQLAndPostgreSQLFor comparison, we will start to introduce them one by one. Hybrid SQL (Optimization engine) SQL is the basis and most critical measure for your interaction with your database, no matter which one you choose. These three platforms are also starting from their separation. Oracle supports extremely mixed queries, almost unlimited number of tables, and connection and Union of all type

Performance Comparison of multiprocessing, threading and gevent in python3 ---- process pool, thread pool, and process Pool performance comparison, python3 At present, computer programs generally encounter two types of I/O: Hard Disk I/O and network I/O. I analyzed the process, thread, and coroutine efficiency in pytho

Original article: C # string reversal methods and Performance Comparison I think it is strange when I see it. In many cases, the class library method must have better performance than the method I wrote. The string input by the original author. If it is an array of input characters, the test result is much more unexpected.ModifyCodeAs follows: Class stringrev

Comparison and Analysis of the Performance of Python judgment values in list or set; comparison of python Performance This article compares and analyzes whether Python judges whether the value is executed in the list or set. We will share this with you for your reference. The details are as follows: The speed of dete

The Performance Comparison of Different traversal methods of ArrayList is actually not much worse. The performance comparison of arraylist // RadomAcess interface .. I traversal ratio .. fast loop, @ more see comments for interface RandomAcess import java. util. arrayList; import java. util. iterator; import java. util

is similar to set. The difference is that set is not automatically ordered, while sorted set can sort members by providing an additional priority (score) parameter, it is insert-ordered, that is, automatic sorting. When you need an ordered and non-repeated list of sets, you can choose sorted set data structure. For example, Twitter's public timeline can be stored as score by posting time, in this way, the query is automatically sorted by time. Implementation Method: In redis sorted set, hashm

In the relational database area, PostgreSQL is a very popular open source database software. Since its release in 1996, it has accumulated nearly 20 years of practical experience, both in PostgreSQL itself and in community ecology. Not only small and medium-sized enterprises, many large industry customers will also use PostgreSQL to build their own database syste

Compare the common operations of the two databases. Use the built-in client programs. MySQL command line: mysql-u user name-h host address-P port number database name-pPostgreSQL command line: psql-U user name-h host address-p port number database name Operation comparison: mysqlpsqlSHOWDATABASES; lUSEdb-name; Compare the common operations of the two databases. Use the built-in client programs. MySQL command line: mysql-u user name-h host address-P po

Binary Bytea Byte[], ArraySegment Oid Oid UINT, IConvertible Xid Xid UINT, IConvertible Cid Cid UINT, IConvertible Oidvector Oidvector Uint[] Name Name String, char[], char, iconvertible Internalchar (internal) Char BYTE, iconvertible Geometry Geometry Postgisgeometr

Tips for improving PostgreSQL Performance In a (poor) PostgreSQL query, only a small change is required (ANY (ARRAY [...]). to ANY (VALUES (...))) the query time can be reduced from 20 s to 0.2 s. From the simplest use of explain analyze, to the use of EXPLAIN s community, there will be a hundred times of learning time investment to return. Use ipvs to monitor sl

Feature comparison PostgreSQL Mysql Comments command-line shortcut keys Rich Lack SQL Parallel execution Y (9.6) N REPL Parallel execution N Y (5.7) Condition/expression (function) index Y N Version Branch Basic stability Branch multipl

() {returnsubsystemID;} InlineChar* Getappversion () {returnappversion;} InlineChar* Getcompanyid () {returnCompanyID;} InlineChar* Getclustername () {returnclustername;} InlinevoidSetserviceid (Char*v) {memset (serviceId,0, A); memcpy (Serviceid,v,strlen (v)); } InlinevoidSetsystemid (Char*v) {memset (SystemID,0,4); memcpy (Systemid,v,strlen (v)); } InlinevoidSetsubsystemid (Char*v) {memset (subsystemID,0,4); memcpy (Subsystemid,v,strlen (v)); } InlinevoidSetappversion (Char*v) {memse

Comparison of Oracle, mysql, sqlserver, and postgresql statements 1. Paging Oracle:SELECT * FROM (select a. *, rownum rn from (select T. * from sj_receiptinfo t WHERE t. taxno like concat ('%', CONCAT (?, '%') Order by t. id desc) a where rownum Mysql:Select * from tableName where condition limit (current page number * Page capacity-1), page capacity pagesize SqlServer: SELECT w2.n, w1. * from article w1,

Use local indexes to improve PostgreSQL Performance You may not know that PostgreSQL supports partial indexing of table data? Its advantage is that it can accelerate the reading speed of the indexed data without additional overhead. the best way is to index the data that is read repeatedly based on the given WHERE clause. this is suitable for some specific analys

3051 millisecondspostgresql:4060579 Records Add indexSelect region_id, Avg ((data-> ' F1 '):: integer) from Fact_data_hstoreGROUP BY region_idResult set: Returns 9 Records, 2 fields, time-consuming millisecondsIndexes have no effect on the performance of this SQL statement.2.2 Test results (eight fields 4 million records)sqlserver:4060579 RecordsSelect Region_id,avg (F1) as AF1From Fact_dataGROUP BY region_idResult set: Returns 9 Records, 2 fields,

Tags: size arrangement SDN Technology share ext ODBC. NET Analysis tool downPostgreSQL Hardware Performance Tuning Translated from the article "PostgreSQL Hardware performance Tuning" PostgreSQL is an object-relational database developed by developers all over the world on the Internet. She is an open so

records from a query result;Prepared Query );Use analyze to maintain accurate optimization statistics;Regular use of vacuum or pg_autovacuumDelete the index (then re-create the index) When making a large amount of data changes)2. Procedural experienceCheck whether the connection pool is used. If not, use it as soon as possible;Check the program again. After the connection is used, check whether the connection pool is returned;3. Server parameter configurationMany configurations in the configura