I'd have at least 80-90 caches, assuming each cache corresponds to a table. Any feedback regarding other questions?
thanks, Clay On Mon, Dec 31, 2018 at 9:58 AM Mikael <mikael-arons...@telia.com> wrote: > Hi! > > You have to try, if you just have a few caches (<10) you may not need to > go for any cache groups at all but the more caches you have the more the > need for cache group pops up, it will create lots of file handles and > use lots of memory that can be kept under control with cache groups. > > Mikael > > Den 2018-12-31 kl. 14:01, skrev Clay Teahouse: > > Hello All, > > I am new to ignite and have several general questions. I'd appreciate > > your feedback. > > > > 1) Cache groups: according to the ignite documentation, cache groups > > help with scaling and performance but might hurt reads. Where is the > > balance? > > > > 2) Capacity planning: If I reading the docs correctly, with native > > persistence enabled, you do not need to specify cache eviction. If so, > > assuming I have data and compute affinity enabled, how do I size my > > nodes, to make sure my data stays in cache, considering volume > > discrepancy in different class of data? Say for example, I have the > > data for Canada and India, with India data being 10 times the data for > > Canada. How do I size my nodes to make sure the last month data for > > India and Canada stay in cache? > > > > 3) Data pin to cache: How do I make sure certain data never gets > > evicted (with native persistence enabled)? For example, I want my > > dimension data to always stay in cache. > > > > 4) Read through: If I am using native persistence, do I need to > > explicitly load the cache, once the data is on disk and no longer in > > cache, or doing a read to the data on the disk, will load the cache? > > If yes, is that true about SQL select as well? Is this possible with > > 3rd party persistence as well, say, postgresql. > > > > 5) Service chaining: Is there an example of service chaining that you > > can point me to? > > > > 6) How do I implement service pipelining in apache ignite? Would > > continuous query be the mechanism? Any examples? > > > > 7) Streaming: Are there examples on how to define watermarks, i.e., > > input completeness with regard to the event timestamp? > > > > > > > > thank you, > > Clay >
