GCache | 一个轻量级,高性能的缓存构架,以android缓存而设计为初衷,也可以应用于一般的Java项目中。

 by   tonybase Java Version: Current License: Apache-2.0

kandi X-RAY | GCache Summary

kandi X-RAY | GCache Summary

GCache is a Java library. GCache has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. However GCache build file is not available. You can download it from GitHub.


            kandi-support Support

              GCache has a low active ecosystem.
              It has 10 star(s) with 6 fork(s). There are 4 watchers for this library.
              It had no major release in the last 6 months.
              GCache has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of GCache is current.

            kandi-Quality Quality

              GCache has no bugs reported.

            kandi-Security Security

              GCache has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              GCache is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              GCache releases are not available. You will need to build from source code and install.
              GCache has no build file. You will be need to create the build yourself to build the component from source.
              Installation instructions are not available. Examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi has reviewed GCache and discovered the below as its top functions. This is intended to give you an instant insight into GCache implemented functionality, and help decide if they suit your requirements.
            • Put the value in the cache
            • Put entry
            • Decode entry
            • Encodes a value
            • Read string map
            • Gets the value associated with the given key
            • End the benchmark with the given tag
            • Start the bench
            • Prints a line to standard output
            • Write map
            Get all kandi verified functions for this library.

            GCache Key Features

            No Key Features are available at this moment for GCache.

            GCache Examples and Code Snippets

            No Code Snippets are available at this moment for GCache.

            Community Discussions


            MariaDB optimization for Woocommerce store with more than 55k articles on sale soon
            Asked 2021-May-24 at 18:37

            and I appreciate in advance for your help on this. I have a VPS with the following specs:

            OS: Centos 7.x CPU Model: Common KVM processor CPU Details: 6 Core(2200 MHz) Distro Name: CentOS Linux release 7.9.2009 (Core) Kernel Version: 3.10.0-1160.25.1.el7.x86_64 Database: Server type: MariaDB Server version: 10.2.38-MariaDB - MariaDB Server

            And here is mu sqltuner output from letting it run after 48 hours and uptime.



            Answered 2021-May-24 at 18:37

            Rules for memory allocation.

            • Do not allocate so much RAM that swapping will occur. Swapping is terrible for MySQL/MariaDB performance.
            • Do adjust innodb_buffer_pool_size such that most of RAM is in use during normal time and even for spikes in activity. (I often say "set it to 70% of available RAM", but you are asking for more details.)
            • Do not bother changing other settings; they add to the complexity of "getting it right".

            There are 3 situations (based on innodb_buffer_pool_size and dataset size):

            • Tiny dataset -- buffer_pool is bigger than necessary --> wasting some of RAM, but so what; it is not useful for anything else. And it give you some room for growth.
            • Medium-sized dataset -- Most activity is done in RAM; the system will run nicely.
            • Big dataset -- The system may be I/O-bound. Adding RAM is a costly and brute force solution. However, some software techniques (eg, better indexes) may help, such as this for WordPress and WooCommerce.

            Source https://stackoverflow.com/questions/67658920


            building Gstreamer mpegts project with Cmake
            Asked 2021-Feb-26 at 01:08

            We are trying to use Gstreamer's mpegts pluging to record a video stream stream using the following Gstreamer example code https://gstreamer.freedesktop.org/documentation/mpegtsmux/mpegtsmux.html?gi-language=c. When we compile the code using gcc mpegtstest.c -o mpegtstest `pkg-config --cflags --libs gstreamer-1.0 gstreamer-mpegts-1.0` -v everything works as expected and the program records with no issues. We are now trying to compile the code using cmake and make. cmake generates correctly but make fails with error. /usr/bin/ld: cannot find -lgstreamer-mpegts-1.0.




            Answered 2021-Feb-26 at 01:08

            Based on your cmake output, I'd guess that you're using a version of FindGStreamer.cmake cribbed from WebKit. If that's the case, the variable you want to use is GSTREAMER_MPEGTS_INCLUDE_DIRS. Note the lack of a hyphen in the variable name.

            If that's not the case, use a simple message() statement before the use of a variable to show you its value during the cmake step.

            In your CMakeLists.txt:

            Source https://stackoverflow.com/questions/66361327


            Mysql per thread memory, variables that lead to thread memory usage?
            Asked 2021-Jan-20 at 19:11

            We recently upgraded from mysql 5.6 to mysql 8.0 on a few servers, one of the servers was fine, and has had no problems, but it has significantly less load than one of our other servers which has been running out of memory.

            Our server launches, then grabs 300 connections, and keeps them open with a C3P0 pool to the mysql server.

            We were running these servers on AWS on MySQL 5.6 with the same overridden parameters on 8GB of RAM, when we upgraded to MySQL 8.0.21 we started running out of RAM in about 1 day. We grew the server to 32Gb but didn't change the parameters. It's gone over 15 GB used and still going up.

            We're pretty sure it's related to the per connection thread memory, but not sure why. From looking at MySQL tuner it looks like the variables that control per thread memory are:



            Answered 2021-Jan-18 at 19:41

            You're calculating the per-thread memory usage wrong. Those variables (and tmp_table_size which you didn't include) are not all used at the same time. Don't add them up. And even if you were to add them up, at least two might be allocated multiple times for a single query, so you can't just sum them anyway.

            Basically, the memory usage calculated by MySQLTuner is totally misleading, and you shouldn't believe it. I have written about this before: What does "MySQL's maximum memory usage is dangerously high" mean by mysqltuner?

            If you want to understand actual memory usage, use the PERFORMANCE_SCHEMA, or the slightly easier to read views on it, in the SYS schema.

            The documentation for PS or SYS is pretty dense, so instead I'd look for better examples in blogs like this one:


            Source https://stackoverflow.com/questions/65780309


            Multiple Redis clients with different persistence?
            Asked 2020-Sep-13 at 17:29

            I need to have 3 different redis dbs, so I have 3 different redis clients, like so:



            Answered 2020-Sep-13 at 17:29

            Redis persistences are configured in server side not client side. And it is not possible to have different persistence policy for one Redis instance.

            For you case, if you want to have different persistence policy(RDB, AOF, or just disabled), you can set up multiple redis servers and create different redis client for those servers.

            For node-redis, you can create different client for different servers as below:

            Source https://stackoverflow.com/questions/63818779


            Galera cluster one of the node desyncs and resyncs periodically
            Asked 2020-Aug-31 at 04:35

            I have three node Galera cluster setup with MariaDB, I see a repeating message for one of the node where it desyncs itself from cluster and resyncs within few seconds. This message is repeating every hour. Though it is just a notice, I would like to understand the reason. Configuration on all the servers is same. Does anyone has idea why this happens ? or if anybody faced similar problem of this sort. Below are the details.

            MariaDB version 10.3.12
            Galera version: 25.3.23-1
            OS: RHEL 7.4
            State transfer mechanism: default

            Below is my Galera configuration on the node which has above mentioned observation.



            Answered 2020-Aug-31 at 04:35

            I could find out, I missed the fact that periodic backup was running on the node via Mariabackup tool. During that time node de-syncs itself from cluster for consistency.

            Source https://stackoverflow.com/questions/63500025


            How to define a static variable inside a JS class
            Asked 2020-Apr-07 at 04:39

            I'm building a static class to store data inside an a array and i want to declare a static variable but i don't know how to do it on javascript.

            JS code:



            Answered 2019-Jan-05 at 01:22

            Babel's plugin-proposal-class-properties is probably what you're looking for. It enables support for static variables/methods inside the class declaration.

            Source https://stackoverflow.com/questions/54048127


            MySQL 5.7: fine tuning for too many connections error
            Asked 2020-Mar-30 at 21:12

            I have an old django 1.9 application connected to a mysql 5.7 database. Sometime I get this error:



            Answered 2020-Mar-25 at 12:07

            I noticed you SET Open Files handles in ubuntu to 1024 when you ran ulimit -n 1024. Your system needs many more available Open File handles to support your 4650 innodb tables. Suggestion ulimit -n 24000 and then check settings with ulimit -a (to list current limits). I am looking forward to analyzing your data next week from production instance.

            Suggestion for your ulimit -a to consider please

            ulimit -n 24000 # from 1024 to enable more OS file handles to be active.

            The above is dynamic with Linux OS. Stop/Start services would have access to the handles. To make this persistent across OS shutdown/restart, review this url for similar OS instructions. These instructions set 500000 for the file-max, please set your capacity at 24000 for now. ulimit please set to 24000, which will allow MySQL to use requested limits and have spares for other apps


            Source https://stackoverflow.com/questions/60774938


            Optimal setting for mysql (mariadb optimization 10.5) in my.cnf (Centos 8)
            Asked 2020-Jan-30 at 05:48

            Here are my mysqltuner results:



            Answered 2020-Jan-30 at 05:48

            Set innodb_buffer_pool_size to about 70% of available RAM. The 4.4G suggested by mysqltuner will handle all your current data. If you expect it to grow, then give it more. This setting will probably help with I/O (not CPU).

            (Actually "InnoDB Read buffer efficiency: 95.00% (920105182 hits/ 968548737 total)" says that the paultry 128M buffer_pool seems to handle the "working set" adequately.)

            You cannot tune for "optimize for better CPU usage". You can find the slow queries and work on indexing (especially 'composite' indexes) and query formulation. Those will help with CPU.


            Source https://stackoverflow.com/questions/59896816


            mysql high cpu usage (280%)
            Asked 2018-Nov-09 at 15:12

            hi my server cpu mysql usage 280 % my cnf file



            Answered 2018-Nov-09 at 15:12

            Suggestions to consider for your my.cnf-ini [mysqld] section

            Source https://stackoverflow.com/questions/49653325


            MySQL tmp_table_size for a small database
            Asked 2018-Aug-22 at 17:03

            I have MySQL 5.7.23 on Ubuntu 18.04. It's a VPS with 2 vCores and 8 GiB of RAM. The server is hosting two WordPress websites. Each website has a database with the size of 7,5 MB. So there is 15 MB database overall.

            I was trying to optimize the database using mysqltuner. It recommends me everytime the same thing:



            Answered 2018-Aug-22 at 17:03

            You should take mysqltuner recommendations with a grain of salt. Its suggestions are not made with any knowledge of your database or your queries, and sometimes they are just guesses based on incomplete information.

            The suggestion to increase the tmp_table_size might be based on reading the status values that indicate some temp tables were created on disk.

            Source https://stackoverflow.com/questions/51971578

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install GCache

            You can download it from GitHub.
            You can use GCache like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the GCache component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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