<transcript><audio_221>there is a expression evaluation syntax that's been added in 2.4 and it adds and it says see slides later because i rearranged my slides yesterday but i've shown several examples of this expression evaluation syntax during the</transcript><transcript><audio_222>course of this talk what the heck there's another one bonus slides number 32 mod substitute allows you to with one configuration directive modify</transcript><transcript><audio_223>content as it gets served out to the client i showed you a silly way to do that with mod x filter earlier this is a much more efficient way i've got a bad word filter in there and then more usefully you can actually switch</transcript><transcript><audio_224>out say a host name from a backend server to a front-end server i am totally out of time that's where my slides are that's where you can email me if you have any more questions get on</transcript> there is a expression evaluation syntax that's been added in 2.4 and it adds and it says see slides later because i rearranged my slides yesterday but i've shown several examples of this expression evaluation syntax during the course of this talk what the heck there's another one bonus slides number 32 mod substitute allows you to with one configuration directive modify content as it gets served out to the client i showed you a silly way to do that with mod x filter earlier this is a much more efficient way i've got a bad word filter in there and then more usefully you can actually switch out say a host name from a backend server to a front-end server i am totally out of time that's where my slides are that's where you can email me if you have any more questions get on
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