In one of our applications we are using a bytes array in LUA to manage an array of key,expire pairs. Pairs can be modified and can expire. I’m wondering if a developer can give me some insight into which would be the best strategy here. One thing we do is always set the expire of the whole record …

[image] ErikDubbelboer: I don’t know how after the UDF the bytes are actually committed to the table It is msgpacked and stored inside bin. And ofcourse unpacked when you read it to modify it. [image] ErikDubbelboer: I haven’t looked into the memory management code yet but wouldn’t it be…

I did some benchmarking. It’s very hard to do accurate benchmarking of UDF code with aerospike. In the end I ended up just calling the functions a whole bunch of time inside the UDF. Of course this doesn’t really take the committing to the table in account but that should always be the same speed. M…

[image] ErikDubbelboer: The pure Lua string version seemed to be a little bit slower with writing than using the bytes functions. I would expect it to be other way around. I see you do many invocation of function in a single call. How many such UDF call did you make. What is your observation …

I did only 100 UDF calls for this benchmark. I didn’t really look at memory utilization, but since this test version preallocates the whole bytes and you can’t really preallocate Lua strings I would expect the bytes version to be better in this case as well. What would you suggest as method to ben…

Lua bytes speed an memory efficiency

Feature Discussion User Defined Functions (UDF)

raj December 14, 2015, 6:14am 4

I would expect it to be other way around. I see you do many invocation of function in a single call. How many such UDF call did you make. What is your observation about memory utilization of the process. I am looking out for fragmentations.

– R

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Lua bytes speed an memory efficiency

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