Cyril David cyx

## gist:4227635

      
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                derekcollison
                / gist:4227635
            
            
              Created
              December 6, 2012 19:40
            
              
                Early results from high-performance NATS server
              
          
    I have some early benchmark results for our work on a high performance NATS server in Go.

Quick Summary:
We can process ~2M msgs/sec through the system, and the ingress and egress are fairly well balanced.

The basics of the architecture are intelligent buffering and IO calls, fast hashing algorithms and subject distributor/routing, and a zero-allocation hand-written protocol parser.

In addition, I used quite a bit of inlining to avoid function overhead, no use of defer, and little to no object allocation within the fast path. I will share more details and the code at a future date.


## ratings.sql
begin;

create table user_ratings (
  id serial primary key,
  user_id integer not null,
  rating integer not null check (rating >= 0 and rating <= 5),
  ratable_id integer not null
);

create function random_int(max integer) returns integer as $$
	begin;

	create table user_ratings (
	id serial primary key,
	user_id integer not null,
	rating integer not null check (rating >= 0 and rating <= 5),
	ratable_id integer not null
	);

	create function random_int(max integer) returns integer as $$