THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
These are the highlights of new features or additions to existing features in 8.0.0. For the complete list of all changes see this Github PR list.
Overview
- ATS 8.0.0 Release Notes
New Features
Proxy protocol v1 incoming connection support
- Moving to YAML for configuration
- Logging configuration - logging.yaml
- SSL/TLS incoming and outgoing configuration - ssl_server_name.yaml
- more configuration files to be converted in the future
- Logging configuration - logging.yaml
- SNI Config enables configuration of inbound and outbound TLS attributes on a per server name basis. This feature is configured via ssl_server_name.config.
- Openssl ASYNC_*_job support available during TLS handshake. Enabled via proxy.config.ssl.async.handshake.enabled. Crypto engines can be specified via an openssl.cnf file specifed in proxy.config.ssl.engine.conf_file.
- External manipulation of the cache via the Cache Tool.
- Body factory now supports default per custom set.
- Remap address specifications can now be in CIDR notation.
- Graceful shutdown. The "--drain" option is added on traffic_ctl server restart and stop.
Deprecated Features
Future Deprecated Features
- None
New Configuration Options
- proxy.config.ssl.server.TLSv1_3.cipher_suites - configures the cipher_suites for TLS v1.3 connections from client
- proxy.config.ssl.client.TLSv1_3.cipher_suites - configures the cipher_suites for TLSv1.3 connections to origin or next hop
- proxy.config.http.insert_forwarded - support for the Forwarded header.
- proxy.config.http.negative_caching_list - control the status codes that are negatively cached.
- proxy.config.http.insert_request_via_str - More control over the contents of the Via header.
- proxy.config.diags.debug.client_ip - enable debug messages for transactions from a specific IP address.
New Log Fields
- crec - error code which TS received
- ctec - error code which TS transmitted
- crsc - Cache Result Sub-Code. More specific code to complement the Cache Result Code.
New Metrics
New Promoted Plugins
- cache_promote - provides a means to control when an object should be allowed to enter the cache
- cachekey - allows some common cache key manipulations based on various HTTP request components
- lua - implement ATS plugin by writing Lua script instead of C code
- escalate - try an alternate origin when the origin server in the remap rule is either unavailable or returns specific HTTP error codes
New Plugins (in experimental)
- access_control - common use-cases related to providing access control to the objects stored in CDN cache
- fq_pacing - rate limit an individual TCP connection, based on Linux support for the Fair Queuing qdisc
- prefetch - increase the cache-hit ratio for a sequence of objects which URL paths follow a common pattern
- tls_bridge - enable secure transit via paired ATS instances
- traffic_dump - dump transactions in replay file format.
- uri_signing - implements the draft URI Signing protocol documented here: https://tools.ietf.org/html/draft-ietf-cdni-uri-signing-12
Existing Plugins
- The existing plugins were updated to be more stylistically correct and be better examples.
header_rewrite - the INBOUND condition was added.
Developer Notices
- C++17 is now required for building.
- A specific callback can be added to a hook only once.
- New internal libraries - BufferWriter, TextView
- Transaction and Session arguments are now separately reserved. Similar arguments are supported for TSVConn instances.