pool

How to configure CommonsPool2TargetSource in spring?

由 我只是一个虾纸丫 提交于 2021-02-18 22:20:05
问题 This become pain in my neck!!! I have three queries. 1)I want to configure CommonsPool2TargetSource in my project for pooling of my custom POJO class. What I have done so far : MySpringBeanConfig class : @Configuration @EnableWebMvc @ComponentScan(basePackages = {"com.redirect.controller","com.redirect.business","com.redirect.dao.impl","com.redirect.model"}) @EnableTransactionManagement @PropertySource("classpath:" + JioTUConstant.SYSTEM_PROPERTY_FILE_NAME + ".properties") @Import(

Best practice for using python pool.apply_async() with callback function

由 好久不见. 提交于 2021-02-11 12:03:26
问题 For pool.apply_async() what is the best practice for accumulating the results coming from each process? Is it job.get() or job.wait() ? what about job.ready( ) and job.successful() ? Is it possible to accumulate each result in a global variable in each process, so that we do not end up with one process in S (sleep) mode for a long time trying to accumulate the results coming from each process? import multiprocessing import os import numpy as np def prepare_data_fill_arrays(simNum,chrLong):

Use Python Pool with context manager or close and join

由 人盡茶涼 提交于 2021-02-08 12:37:11
问题 The Python documentation has examples in the format of with Pool() as p: p.map(do) but I see a lot of people using the format below. p = Pool() p.map(do) p.close() p.join() Which is more desirable? 回答1: I think using Pool as a context manager (e.g., with ... ) is desirable. It's a newer addition to Pool , and it lets you more cleanly encapsulate the lifespan of the pool. One thing to be aware of is, that when the context manager exits, it will terminate the pool and any ongoing tasks. This

GO语言－Redis 连接池

由 大兔子大兔子 提交于 2021-01-03 17:30:17
自留笔记：从beego中分离出来的 //file name: redis.go package conn import ( // "fmt" "github.com/garyburd/redigo/redis" ) var MAX_POOL_SIZE = 20 var redisPool chan redis.Conn func putRedis(conn redis.Conn) { if redisPool == nil { redisPool = make(chan redis.Conn, MAX_POOL_SIZE) } if len(redisPool) >= MAX_POOL_SIZE { conn.Close() return } redisPool <- conn } func InitRedis(network, address string) redis.Conn { redisPool = make(chan redis.Conn, MAX_POOL_SIZE) if len(redisPool) == 0 { go func() { for i := 0; i < MAX_POOL_SIZE/2; i++ { c, err := redis.Dial(network, address) if err != nil { panic(err) } putRedis

String pool - do String always exist in constant pool?

由 穿精又带淫゛_ 提交于 2020-11-25 03:52:41
问题 When string is created by using literal, it gets stored in pool. But when new operator is used to create String object, it stores the object in Heap. But is the object in heap just a pointer to literal stored in pool or is it a simple String object stored in heap which is eligible for GC? 回答1: Terminology: The constant pool is an area in (each) .class file that contains various constants, including strings. No runtime objects exist in the constant pool. It is a region of a file . The string

String pool - do String always exist in constant pool?

由 为君一笑 提交于 2020-11-25 03:51:50
问题 When string is created by using literal, it gets stored in pool. But when new operator is used to create String object, it stores the object in Heap. But is the object in heap just a pointer to literal stored in pool or is it a simple String object stored in heap which is eligible for GC? 回答1: Terminology: The constant pool is an area in (each) .class file that contains various constants, including strings. No runtime objects exist in the constant pool. It is a region of a file . The string
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