redis source code analysis

Introduction Hash table is one of the core structures of redis. In redis source code, dict. c and dict. h defines the hash structure used by redis. In this article, we will. c and dict. h. Because dict. the implementation of the separate chaining hash table used in c can be

Source code version: redis 2.4.4 Redis memory-related functions are stored in zmalloc. h zmalloc. C.Redis can use tcmalloc and jemallocMakefile: ifeq ($(USE_TCMALLOC),yes) ALLOC_DEP= ALLOC_LINK=-ltcmalloc ALLOC_FLAGS=-DUSE_TCMALLOCendififeq ($(USE_JEMALLOC),yes) ALLOC_DEP=../deps/jemalloc/lib/libjemalloc.a ALLOC_L

larger strings, using the arbitrary value * of 32 bytes. this code was backported from the unstable branch * where this is already med when the object is too large to be * encoded as EMBSTR. */if (len> 32 o-> encoding = REDIS_ENCODING_RAW sdsavail (s)> len/10) {// call sdsRemoveFreeSpace to remove the spaces in the string 0-> ptr from o-> ptr = sdsRemoveFreeSpace (o-> ptr);}/* Return the original object. */return o ;}.....Removes the space occupied

Redis source code parsing (5): redis persistence, redis source code parsing Redis is often called a memory database because it stores all d

Redis source code parsing (1): Introduction, redis source code parsing IntroductionZookeeper The author of Redis, Salvatore Sanfilippo, is from Sicily, Italy and now lives in Catania. H

Anatomy of a Redis network connection library 1. Introduction to Redis Network Connection library The file that corresponds to the Redis network Connection library is networking.c. This file is primarily responsible for client creation and release commands receive and command reply REDIS Communication Protocol

Analysis of the Redis source code for nearly 1 months, but also to the most core, closest to the beginning of the system, I named him the main directory, which included 2 important documents, REDIS-CLI and Redis files, 1 represent

The last time just analyzed the client structure analysis, thinking more simple, clear, and finally learning is the implementation of the service end, the service in Redis but the heavy, which basically contains the previous modules involved in all the points of knowledge, from the Redis of the head file can be seen, Redis.h The amount of

Latencysample acquisition point structure definition: /* Representation of a latency sample:the sampling time and the latency * observed in milliseconds.//// Delay sample * * struct Latencysample { //Delay Sample creation time int32_t/* We don ' t use time_t to force 4 bytes Usage everywhe Re. * * //delay time, in milliseconds uint32_t latency/* latency in milliseconds. */ };The dictionary does not maintain a sample node, but rather a node list structure: /* The Latency Time ser

converted into memory-mapped models using encoding). The former is used to hold the long type data, which is used to hold Sds/char*,long long,long double,double type data. The string type is basically implemented by the operation function of the SDS data structure, here is just a simple example, and nothing else to say./* Appends a string to the specified string and indicates an increased memory space */sds Sdscatlen (SDS s, const void *t, size_t len) {//Declaration string sh struct SDSHDR *

The cornerstone of Redis memory management ZMALLC.C Source code interpretation (a) The cornerstone of Redis memory management ZMALLC.C Source code interpretation (ii) The previous two posts, detailed introduction of the Z

Time passed quickly, after 1 months of time to learn, I Redis source code analysis has been more than half of the previous study, I mainly for the Redis tool class code to learn. The next few days I'm going to learn about the impl

Tomcat source code analysis-component startup implementation analysis, tomcat source code analysis component Tomcat is composed of multiple components. How does Tomcat manage its lifecy

, indicates a permanent cache return New string[] {"value1","value2" }; }}Third, source code analysis Source code in the Github.com/aspnet/caching,redis source is relatively simple, mai

between different buckets). Take a look at the RDB-related content below.1. rdb file formatThe Rdb file format is relatively simple and can be seen as a sequence of instructions, consisting of each instruction:|-----------------------|----------------------------------|| OP Code:1byte | Instruction:nbytes ||-----------------------|----------------------------------|When an RDB is loaded, this sequence of instructions is parsed. All op

JDK source code-AQS source code analysis, jdk source code aqs Unless otherwise specified, all the articles on this site are original. For reprinted articles, enter the address. Abstrac

>= Te->when_ms)) {//In the callback handler, it is possible to add a new timer event, if you continue to join, there is a risk of a dead loop, so you need to avoid this situation, each cycle does not handle the newly added events, which is implemented by the following code. if (Te->id > Maxid) { te = te->next; Continue; }The event Loop section is analyzed to the end, feeling more intuitive, clear, comple

YII Source Code Analysis (2): yii source code analysis. YII Source Code Analysis (II): yii

YII Source Code Analysis (3): yii source code analysis. YII Source Code Analysis (3). yii

Compile the source code on CentOS5Redhat5 and install Redis | InstallRedisonCentOS5Redhat5 Compile the source code on CentOS 5/Redhat 5 to Install Redis | Install Redis on CentOS 5/Redh