cache busting

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Attackers can bypass IFRAME busting.

Recently, due to project requirements, we need to embed a third-party website in the IFRAME webpage. For example, Renren. After the front-end engineer found this problem, I looked at it and found that it was because everyone made IFRAME busting. Later I studied it. The better way is to solve this problem through HTTP 204. Through the description, you will know what it is. The server has fulfilled the request but does not need to return an entity-bo

Common PHP Cache Technology Analysis PHP cache mechanism data cache page cache memory cache time triggering cache content triggering cache static Cache

In most cases, our website uses a database as a container for storing site data. When you execute an SQL query, the typical process is: connect to the database-> prepare an SQL query-> send a query to the database-> get the database return result-> close the database connection. However, some data in the database is completely static or infrequently changed. The cache system caches the SQL query results to a faster storage system for storage, this avo

Cache avalanche, cache penetration, cache warming, cache updates, cache demotion, and more

first, Cache avalanche Cache Avalanche We can simply understand that due to the original cache failure, the new cache is not in the period (for example: we set the cache with the same expiration time, at the same time a large area of ca

Learning path 19: Imitating ASP. NET cache dependency custom cache mechanism elaborate ASP. NET cache and its advanced usage petshop ASP. NET cache system cache resolution 6: database cache dependency

The performance of the project has been at the lower-and lower-level and has been exploring. Since the WCF segment was optimized in the past few weeks, the speed has improved significantly. HoweverProgramIt is not an ideal requirement, so we must continue to work hard! I. Situation Some time ago, we found that multiple clients frequently obtain the same data when they connect to the server for the first time. That is to say, each client needs to search for the same data in the database, it i

One of the disk cache topics, cache hit and cache miss & the difference between cache and Cache

Caching is an important technology in most computers. In fact, all data access in the computer can be seen as a variant of the basic cache concept. Caching is an important technology in most computers. In fact, all data access in the computer can be seen as a variant of the basic cache concept. At any time, as long as the system has multiple devices and the performance of these devices is different, there

One of the disk cache topics, cache hit and cache miss & amp; the difference between cache and Cache

At any time, as long as the system has multiple devices and the performance of these devices is different, there is a possibility of constantly changing the work location from a slow device to a fast device to improve the system performance, this is the basic idea of caching. That is, data is copied from one location to another to make retrieval faster. Although this is a simple concept, it contains many whimsy.Simply put, the preparation for meeting a certain expected future needs is

Hibernate review cache mechanism-first level cache, level two cache, query cache

before we introduce the caching mechanism of hibernate, let's look at what the cache is:Cache: A very general concept in the computer domain. Put something in it. The cache is a collection. It is between an application and a persistent data storage source, such as a file on a hard disk or a database, to reduce the frequency with which the application directly reads and writes to the persistent data storage

One of the disk cache topics cache hit and cache misses & cache and Buffer differences _mssql

Whenever the system comes with multiple devices, and the performance of these devices varies, there is the possibility of changing the work place from slow to fast devices to improve system performance, which is the basic idea of caching. That is, data is copied from one location to another, making it faster to retrieve. Although this is a simple concept, but it contains a lot of fantastic thoughts. Simply put, the preparation that is needed to meet some expected future needs to be cached. Cach

Atitit Cache Attilax Etti Summary 1. Use cache for purposes (using cache) 1 1.1. 1, to achieve the goal of reducing the burden of the database 1 1.2. Speed up queries by 2 2. The common parameters of the cache are too

Atitit Cache Caching Path Attilax Etti Summary 1. Purpose of using caching (using cache) 1 1.1.1. Reduce the burden on the database by achieving the target 1 1.2. Speed up the query 2 2. Common parameter expiration time of the cache (seconds 2 3. Cache implementation away from principle 2 4.

Primary cache Two-level cache distribution Cache page Cache main differences __session

1. First-level caching is the form of storing data in a local cache (low operating hit): Scope of interrelated persistent object caches: Transaction scope, each transaction has a separate first-level cache concurrency Access policy: Because each transaction has a separate first-level cache without concurrency problems, there is no need to provide concurrent acces

WeChat applet cache: local cache, synchronous cache, asynchronous cache, and Applet asynchronous

Applet cache: local cache, synchronous cache, asynchronous cache, and Applet asynchronousAbout local cache 1. wx. setStorage (wx. setStorageSync), wx. getStorage (wx. getStorageSync), and wx. clearStorage (wx. clearStorageSync) can set, retrieve, and clear local caches. The

Cache Mechanism of hibernate review-level cache, level-2 cache, and query Cache

Before introducing the cache mechanism of hibernate, let's take a look at what cache is:Cache: a very common concept in the computer field. The cache is a collection. It is between an application and a permanent data storage source (such as a file or database on a hard disk). Its function is to reduce the frequency of applications directly reading and writing per

thinkphp static cache, data cache, fast cache, query cache

Static caching' Html_path ' cache directory, which is a constant is not a configuration item, defined in the portal file' html_cache_on ' = = True, //Turn on static cache' Html_cache_time ' + 3600, //global static cache lifetime (seconds)' Html_file_suffix ' = '. HTML ', //Set static cache file suffix' html_cache_rules

Evaluate the differences between thinkphp data cache, static cache, and query cache. Can I use cache to replace sessioncookie when saving openid in WeChat browser?

Evaluate the differences between thinkphp data cache, static cache, and query cache. If the browser saves openid, can it use cache to replace sessioncookie? What is the difference between thinkphp data cache, static cache, and que

thinkphp data cache, static cache, and query cache differences. WeChat browser Save OpenID can you use cache instead of Session cookie?

thinkphp data cache, static cache, and query cache differences. Browser Save OpenID can you use cache instead of Session cookie? Reply content: thinkphp data cache, static cache, and query

Memcached Cache avalanche, cache traversal, cache pre-warming, cache algorithm (7)

Cache avalancheThe cache avalanche may be because the data is not loaded into the cache, or the cache is invalidated by a large area at the same time, causing all requests to go to the database, causing the database CPU and memory load to be too high, or even downtime.Solution Ideas:1, using the lock count, or use a re

Memcached Cache avalanche, cache traversal, cache warming, cache algorithm

Cache avalancheThe cache avalanche may be because the data is not loaded into the cache, or the cache is invalidated by a large area at the same time, causing all requests to go to the database, causing the database CPU and memory load to be too high, or even downtime.Solution Ideas:1, using the lock count, or use a re

"Go" memcached cache avalanche, cache penetration, cache warming, cache algorithm

Cache avalancheThe cache avalanche may be because the data is not loaded into the cache, or the cache is invalidated by a large area at the same time, causing all requests to go to the database, causing the database CPU and memory load to be too high, or even downtime.Solution Ideas:1, using the lock count, or use a re

Hibernate Cache: Session Cache, Second Level Cache, and Query Cache

Hibernate Cache: Session Cache, Second Level Cache, and Query CacheHibernate provides support for Cache to reduce necessary data access. If this function can be correctly used, the program performance will be greatly improved. However, in many cases, we may not use the correct one. The

PHP Cache technology Static cache Memcache Cache Redis Cache

PHP Operation Cache Generated Get Delete 1 class file{2 private $_dir; 3 const ext= '. txt '; 4 public Function __consruct () {5 $this->_dir dirname (__file___). ' Files/'; 6} 7 Public Function CacheData ($key, value= ", $path =") {8 $filename = $this->_dir. $path. $key. Self::ext; 9 if ($value!== ") {//write value to cache//delete cache if (I

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