As an experienced website operations expert, I have accumulated rich experience in managing and optimizing various websites, especially in deeply understanding efficient and stable content management systems like AnQiCMS (AnQiCMS).Multi-site management is a powerful feature of AnQiCMS, which allows users to easily operate multiple independent websites under the same system.However, in such a mode, many operators may wonder: How are the cache and data directories of each site independently managed by the system, and how are they named?Today, let's delve deeply into this issue.

Considerations for independence in the multi-site mode

It is crucial to ensure that the data and cache of each site are independent in multi-site operations.This not only concerns data security and isolation, but also directly affects the performance, stability, and future maintenance convenience of the site.AnQiCMS was well-designed from the beginning, taking this point into consideration and creating an independent running environment for each site through a set of clear directory naming rules.

  1. Data isolation and security:Avoid data confusion or accidental leakage between different sites.
  2. Performance optimization:Independent caches can effectively improve access speed without interference.
  3. Troubleshooting:If a site encounters a problem, it can quickly locate its independent directory, reducing the impact on other sites.
  4. Backup and Recovery:An independent directory makes the backup, migration, and recovery operations of a single site simpler and more reliable.

Caching and naming logic of the data directory

AnQiCMS under the multi-site management mode, when generating independent cache and data directories for each new site, follows a set of intuitive and systematic naming rules. The core lies in utilizing the most unique identifier of each site——DomainAnd combine with a specific prefix to ensure global uniqueness and identification.

In particular, when you add a new site in the AnQiCMS backend, the system will require you to specify a "Site Root Directory".This directory is the home of all independent data and cache for the site.

[基础路径]/[域名_下划线化]

There are several key points to interpret:

  • [基础路径]:This is typically the root directory where the AnQiCMS application runs, for example, in a Docker deployment environment, it is usually/app/This means that all the site data directories will be created under this unified base path.
  • [域名_下划线化]:This is the most distinctive and functional part of the naming rules. The system will take the domain name you set for the new site (for exampledev.anqicms.com), and then replace alldots (.) with underscores (_).
    • For example, if your new site domain isdev.anqicms.comthen the corresponding independent data directory might be nameddev_anqicms_com.
    • If the domain iswww.example.co.ukthen it might be namedwww_example_co_uk.

Replace the dots in the domain name with underscores to avoid potential conflicts in file system path resolution, ensuring the legality and compatibility of directory names. In such an independent directory, AnQiCMS will store the site:

  • Cache file:Including page cache, data query cache, etc., to speed up site access.
  • Upload file:All images, attachments, and other resources uploaded via the backend, ensure physical isolation of media resources between different sites.
  • Log file:Site operation logs, error logs, etc., convenient for independent monitoring and troubleshooting.
  • Other site-specific data:Any site configuration or temporary data that needs to be stored independently.

Database naming strategy

In addition to the independent directory at the file system level, AnQiCMS also adopts a similar independent naming strategy at the database level to ensure the purity of the data layer.For each new site, the system will recommend or enforce that you configure a separate database for it.

The naming of this independent database is also closely related to the site's domain name:

[域名_下划线化]

Similarly, the system will replace the dots in the domain name of the site with underscores as a suggested value for the database name. For example, the domaindev.anqicms.comThe corresponding database name may bedev_anqicms_comThis unified naming method makes it easy to identify the sites of each database even on the database server, greatly simplifying database management work.

In the Docker deployment environment of AnQiCMS, if you choose to 'Reuse default database account information', the system will automatically handle the creation and association of these independent databases.If your needs are more complex, such as deploying the database to different servers, AnQiCMS also provides flexibility, allowing you to manually fill in independent database connection information.

Summary and Practical Suggestions

AnQiCMS in multi-site mode, by generating for each siteAn independent file directory named with domain underline(usually in/app/the basic path) andIndependent databaseAchieved high isolation of data and cache. This design not only enhances the stability, security, and performance of the system, but also greatly facilitates the daily operation and fault handling of the website.

As a website operator, understanding and following these naming rules can help us better manage and maintain a multi-site architecture.For example, when performing a backup of a single site, you can directly locate to the corresponding independent directory and database for operation, without worrying about affecting other sites.At the same time, clear naming can also make team members more efficiently identify and operate the data of the target site during collaboration.

Frequently Asked Questions (FAQ)

1. Is this directory and database naming rule mandatory? What if I manually modify the name?Answer: In the AnQiCMS multi-site management feature, the system will automatically suggest and create directories and databases according to this "domain underscored" rule for you.Although you may be able to manually specify different names in some non-automated deployment scenarios, it is strongly recommended to follow this rule.This is because the internal logic and recognition mechanism of AnQiCMS are based on this convention. Unstandardized naming may cause the system to fail to correctly identify and manage site data, leading to various issues such as cache invalidation, files not found, and data confusion.

2. Why should the dot in the domain name (.) be replaced with an underscore (_Is it not better to use domain names directly?The domain name is replaced with an underscore, mainly for compatibility and standardization of file system and database naming.In many file systems, the period may be misunderstood as a file extension or have special meaning in directory or file names, leading to path parsing errors.Similarly, in some database systems, database names or table names containing dots may also cause syntax issues or ambiguities.Using underscores as a substitute can effectively avoid potential conflicts and ensure the legality and stability of naming.

Do each site need an independent database? Can I let multiple sites share a database?Answer: The official recommendation of AnQiCMS and the multi-site management design tend to use an independent database for each site to achieve complete data isolation and management convenience.This helps ensure data integrity, simplify backup recovery processes, and avoid mutual impact on data logic.Although theoretically, it is possible to create multiple different table prefix tables in a single database to "share" the database, but this will increase the complexity of management and does not comply with the recommended practice of AnQiCMS.Therefore, it is strongly recommended to configure an independent database for each site to ensure system robustness and long-term maintainability.