Where is the configuration file of nginx?

NginxUnit is a standalone application server, unlike traditional Nginx. It directly runs multi-language dynamic applications, such as Python, PHP, Go, etc., and supports real-time configuration updates and coexist with multiple applications. 1. It can execute application code without additional backend; 2. Realize zero downtime configuration changes through RESTfulAPI; 3. Can deploy multiple language applications on a single server; 4. Especially suitable for microservices and lightweight container environments. Compared with standard Nginx, it is more suitable for processing dynamic content, and can also be used in conjunction with it to achieve a front-end and back-end separation architecture.

How to implement HTTP load balancing using Nginx? The answers are as follows: 1. Use the upstream module to define the backend server group and forward the request through proxy_pass in server or location; 2. Support polling, weighted polling, minimum connection and IP hashing policies; 3. You can configure down, backup, fail_timeout and max_fails parameters to enhance stability; 4. After modifying the configuration, execute nginx-t check syntax and use nginx-sreload to take effect. For example, the basic configuration structure includes three backend nodes using polling to distribute traffic by default, while weighted polling allows the allocation of requests by weight, least_conn will send the request

Configuring health checks for backend servers is the key to ensuring high availability of services. 1. First enable the health check module, such as NginxPlus is enabled using the health_check instruction. The open source version needs to rely on third-party modules or tools to implement it; 2. Then customize the path and parameters, such as setting uri=/health, interval=5s, fails=3, and passes=2 to improve accuracy; 3. Then combine the load balancing strategy to define multiple nodes in the upstream block and dynamically eliminate abnormal nodes; 4. Finally, monitor the health status through log analysis, and record health check behavior using custom log_format to ensure timely discover problems and optimize configuration. Set various parameters reasonably

InNGINXconfiguration,thedifferencebetweenlocation/andlocation=/isthatlocation=/isanexactmatchfortherootURLwithhigherpriority,whilelocation/isageneralprefixmatchwithlowerprecedence.1.location=/matchesonlytheexactrootrequest(e.g.,http://example.com/),n

To efficiently provide MP4 video files, you need to enable byte range requests, optimize file structure, rational encoding and compression, and adopt strategic caching. First, enable byte range request (Accept-Ranges:bytes) to support video jumps, interrupted broadcasts and adaptive bit rate streams; second, use tools such as qt-faststart to move MOOV atoms to the beginning of the file to achieve bottom-playing; third, use H.264/H.265 encoding, reasonably set the bit rate and enable double-pass encoding to reduce the file size while ensuring quality; finally, by setting long-term Cache-Control headers and using CDN for edge caching, reduce server load and improve response speed.

Custom log formats can improve log readability and analysis efficiency. The specific steps include: 1. Determine the fields to be recorded, such as client IP, request time, response time, status code, User-Agent, custom identifier, etc.; 2. Configure in different services, such as Nginx using log_format, Apache using LogFormat, Node.js using morgan middleware; 3. Pay attention to maintaining format consistency, avoiding sensitive information, adapting to log parsing tools, enabling log rotation and testing format validity.

The difference between root and alias in Nginx is that the path mapping method is different. 1. After root appends the request URI to the specified path, for example, in location/static/{root/data/html/;}, /static/css/styles.css corresponds to /data/html/static/css/styles.css; 2.alias replaces the matching URL part, such as location/static/{alias/data/files/;}, /static/css/styles.css corresponds to /data/files/css/styles.

To debug Nginx's rewrite rules, you can solve them through the following steps: 1. Check the access log and error log to confirm whether the rewrite is effective, error.log will record matching failures or redirect loops; 2. Use return or rewrite_log to temporarily debug whether the rule hits, such as return200, to verify the triggering of the rule; 3. Test the rules in steps to avoid multiple rules conflicts or improper use of flag bits to affect the results; 4. Pay attention to common errors, such as the regular expression not being escaped, the lack of ^ and $ causes false matching; 5. Use curl to simulate requests to avoid browser cache interference, and judge whether the jump is correct through the response header Location field.