Varnish-Cache: high-performance reverse proxy cache server and HTTP accelerator

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How varnish works

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As shown in: varnish is similar to General server software, which can be divided into Master process and child process. The master process reads the storage configuration file, calls the appropriate storage type, creates/reads cache files of the corresponding size, and then the master initializes the structure for managing the bucket, then fork and monitors the child process. During the initialization of the main thread, the child process maps the previously opened storage file to the memory. At this time, the space structure is created and initialized and mounted to the storage management structure to be allocated. The child process allocates several threads for work, including several management threads and multiple worker threads.

Varnish Workflow

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Simple varnish application architecture Topology

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To be continued...

Varnish-Cache: high-performance reverse proxy cache server and HTTP accelerator