Best option for memcached client

jon.keys · 2014-08-06T22:25:29+00:00

Hello! On Mon, Aug 18, 2014 at 4:50 AM, ashish adhav wrote: > First of all thank you for your reply. > I was able to achieve 25 % performance improvem...

Best option for memcached client

jon.keys

I'm comparing the two memcached client options:

https://github.com/openresty/lua-resty-memcached
https://github.com/openresty/memc-nginx-module

I'm leaning towards ngx_memc because I can easily provide backup servers via the upstream module and I can easily mock my tests that rely on caching functionality.

However, I'm curious if anyone has experience with either module or advice for / against using either module?

I'm primarily concerned with performance and stability.

I've noticed that there is definitely some overheard involved with the ngx_memc module due to URL encoding / decoding the already serialized objects (i.e. JSON string).

Any advice or insight would be greatly appreciated.

Thanks!

agentzh

Hello!

On Wed, Aug 6, 2014 at 7:25 AM, Jon Keys wrote:
> I'm comparing the two memcached client options:
>
> https://github.com/openresty/lua-resty-memcached
> https://github.com/openresty/memc-nginx-module
>
> I'm leaning towards ngx_memc because I can easily provide backup servers via
> the upstream module and I can easily mock my tests that rely on caching
> functionality.
> However, I'm curious if anyone has experience with either module or advice
> for / against using either module?

Use of lua-resty-memcached is recommended if you're going to process
the results in Lua anyway. It is more efficient and more flexible than
subrequesting the ngx_memc module.

Regarding failover handling, you can always code it up easily in Lua
yourself. And hey, it is Lua :)

Regards,
-agentzh

jon.keys

On Wednesday, August 6, 2014 3:04:57 PM UTC-4, agentzh wrote:

Hello!

On Wed, Aug 6, 2014 at 7:25 AM, Jon Keys wrote:
> I'm comparing the two memcached client options:
>
> https://github.com/openresty/lua-resty-memcached
> https://github.com/openresty/memc-nginx-module
>
> I'm leaning towards ngx_memc because I can easily provide backup servers via
> the upstream module and I can easily mock my tests that rely on caching
> functionality.
> However, I'm curious if anyone has experience with either module or advice
> for / against using either module?

Use of lua-resty-memcached is recommended if you're going to process
the results in Lua anyway. It is more efficient and more flexible than
subrequesting the ngx_memc module.

Regarding failover handling, you can always code it up easily in Lua
yourself. And hey, it is Lua :)

Agreed. It shouldn't take too much code to achieve the same effect.

I usually try to minimize my custom code if possible because I have a tendency to introduce bugs when I write too much :-)

Thank you so much for your advice. I really appreciate it!

Regards,
-agentzh