How to enforce HLS cache for live streaming delivery

1. Open Azion CLI in your terminal.
2. Get the details of an existing edge application using the list command: azion list edge-application --details
3. Enable Tiered Cache for your application: $ azion update edge-application --application-id 1234 --l2-caching true
4. Create an origin: $ azion create origin --application-id 1234 --name "origin-edge" --origin-type single_origin --addresses "example.com" --host-header "example.com"
5. Configure the cache policy for the chunks: $ azion create cache-setting --application-id 1234 --name "chunks-policy" --browser-cache-settings "override" --browser-cache-settings-maximum-ttl 0 --cdn-cache-settings "override" --cnd-cache-settings-maximum-ttl 60

• Define Advanced Cache Key behaviors according to your needs. Check the optional flags for the create command.
• The recommendation is selecting Content does not vary, for Query String and/or Cookies, according to your needs.

1. Access Azion Console.
2. Go to Products menu > Edge Application.
3. Select your application.
4. Open the Cache Settings tab and click the + Cache Setting button to create the new cache policy:

• Give it a unique name.
• In Cache Expiration Policies:
  • For Browser Cache Settings, select Override Cache Setting and define a Maximum TTL of 0.
  • For Edge Cache Settings, select Override Cache Setting and define a Maximum TTL of 60.
• Enable the Tiered Cache switch.
• In the Advanced Cache Key section, define the behavior of your application toward cache segmentation of objects.
  • The recommendation is selecting Content does not vary, for Query String and/or Cookies, according to your needs.

5. Click the Save button.

Now configure the cache policy for the playlist: $ azion create cache-setting --application-id 1234 --name "playlist-policy" --browser-cache-settings "override" --browser-cache-settings-maximum-ttl 0 --cdn-cache-settings "override" --cnd-cache-settings-maximum-ttl 5

• Define Advanced Cache Key behaviors according to your needs. Check the optional flags for the create command.
• The recommendation is selecting Content does not vary, for Query String and/or Cookies, according to your needs.

Still on the Cache Settings tab:

1. Click the + Cache Setting button again to create a new cache policy for the playlist:

• For Browser Cache Settings, select Override Cache Setting and define a Maximum TTL of 0.
• For Edge Cache Settings, select Override Cache Setting and define a Maximum TTL of 5.
• Enable the Tiered Cache switch.
• In the Advanced Cache Key section, define the behavior of your application toward cache segmentation of objects.
  • The recommendation is selecting Content does not vary, for Query String and/or Cookies, according to your needs.

2. Click the Save button.

Still on the application page, open the Rules Engine tab:

First, create a rule for the chunks:

1. Click the + Rule button.
2. Give a name and a description (optional) to your rule.
3. Select the Request Phase option.
4. In Criteria, define if ${uri} matches .\*.ts.
5. In Behaviors, select Set Cache Policy and add the policy for the chunks you created in the previous step.
6. Click the Save button.

Now, create a rule for the playlist:

1. Click the + Rule button.
2. Give a name and a description (optional) to your rule.
3. Select the Request Phase option.
4. In Criteria, define if ${uri} matches \*.m3u8.
5. In Behaviors, select Set Cache Policy and add the policy for the playlist you created in the previous step.
6. Click the Save button.

1. First, create a rule for the chunks: $ azion create rules-engine --application-id 1234 --phase "request" --file ./chunks-rule.json

In the chunks-rule.json file, include:

{
  "name": "chunks-rule",
  "description": "This is a description for your chunks rule",
  "criteria": [
      [
          {
              "conditional": "if",
              "variable": "${uri}",
              "operator": "matches",
              "input_value": ".*.ts"
          }
      ]
  ],
  "behaviors": [
      {
          "name": "set_cache_policy",
          "target": "chunks-policy"
      }
  ]
}

2. Now, create a rule for the playlist: $ azion create rules-engine --application-id 1234 --phase "request" --file ./playlist-rule.json

In the playlist-rule.json file, include:

{
    "name": "playlist-cache-rule",
    "description": "This is a description for your playlist rule",
    "criteria": [
        [
            {
                "conditional": "if",
                "variable": "${uri}",
                "operator": "matches",
                "input_value": "\*.m3u8"
            }
        ]
    ],
    "behaviors": [
        {
            "name": "set_cache_policy",
            "target": "playlist-policy"
        }
    ]
}