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https://github.com/coredns/coredns.git
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e9eda7e7c8
* cache: add sharded cache implementation Add Cache impl and a few tests. This cache is 256-way sharded, mainly so each shard has it's own lock. The main cache structure is a readonly jump plane into the right shard. This should remove the single lock contention on the main lock and provide more concurrent throughput - Obviously this hasn't been tested or measured. The key into the cache was made a uint32 (hash.fnv) and the hashing op is not using strings.ToLower anymore remove any GC in that code path. * here too * Minimum shard size * typos * blurp * small cleanups no defer * typo * Add freq based on Johns idea * cherry-pick conflict resolv * typo * update from early code review from john * add prefetch to the cache * mw/cache: add prefetch * remove println * remove comment * Fix tests * Test prefetch in setup * Add start of cache * try add diff cache options * Add hacky testcase * not needed * allow the use of a percentage for prefetch If the TTL falls below xx% do a prefetch, if the record was popular. Some other fixes and correctly prefetch only popular records.
95 lines
2.7 KiB
Go
95 lines
2.7 KiB
Go
package cache
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import (
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"testing"
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"time"
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"github.com/mholt/caddy"
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)
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func TestSetup(t *testing.T) {
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tests := []struct {
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input string
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shouldErr bool
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expectedNcap int
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expectedPcap int
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expectedNttl time.Duration
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expectedPttl time.Duration
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expectedPrefetch int
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}{
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{`cache`, false, defaultCap, defaultCap, maxNTTL, maxTTL, 0},
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{`cache {}`, false, defaultCap, defaultCap, maxNTTL, maxTTL, 0},
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{`cache example.nl {
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success 10
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}`, false, defaultCap, 10, maxNTTL, maxTTL, 0},
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{`cache example.nl {
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success 10
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denial 10 15
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}`, false, 10, 10, 15 * time.Second, maxTTL, 0},
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{`cache 25 example.nl {
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success 10
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denial 10 15
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}`, false, 10, 10, 15 * time.Second, 25 * time.Second, 0},
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{`cache aaa example.nl`, false, defaultCap, defaultCap, maxNTTL, maxTTL, 0},
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{`cache {
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prefetch 10
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}`, false, defaultCap, defaultCap, maxNTTL, maxTTL, 10},
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// fails
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{`cache example.nl {
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success
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denial 10 15
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}`, true, defaultCap, defaultCap, maxTTL, maxTTL, 0},
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{`cache example.nl {
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success 15
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denial aaa
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}`, true, defaultCap, defaultCap, maxTTL, maxTTL, 0},
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{`cache example.nl {
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positive 15
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negative aaa
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}`, true, defaultCap, defaultCap, maxTTL, maxTTL, 0},
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{`cache 0 example.nl`, true, defaultCap, defaultCap, maxTTL, maxTTL, 0},
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{`cache -1 example.nl`, true, defaultCap, defaultCap, maxTTL, maxTTL, 0},
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{`cache 1 example.nl {
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positive 0
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}`, true, defaultCap, defaultCap, maxTTL, maxTTL, 0},
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{`cache 1 example.nl {
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positive 0
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prefetch -1
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}`, true, defaultCap, defaultCap, maxTTL, maxTTL, 0},
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{`cache 1 example.nl {
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prefetch 0 blurp
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}`, true, defaultCap, defaultCap, maxTTL, maxTTL, 0},
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}
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for i, test := range tests {
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c := caddy.NewTestController("dns", test.input)
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ca, err := cacheParse(c)
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if test.shouldErr && err == nil {
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t.Errorf("Test %v: Expected error but found nil", i)
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continue
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} else if !test.shouldErr && err != nil {
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t.Errorf("Test %v: Expected no error but found error: %v", i, err)
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continue
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}
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if test.shouldErr && err != nil {
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continue
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}
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if ca.ncap != test.expectedNcap {
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t.Errorf("Test %v: Expected ncap %v but found: %v", i, test.expectedNcap, ca.ncap)
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}
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if ca.pcap != test.expectedPcap {
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t.Errorf("Test %v: Expected pcap %v but found: %v", i, test.expectedPcap, ca.pcap)
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}
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if ca.nttl != test.expectedNttl {
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t.Errorf("Test %v: Expected nttl %v but found: %v", i, test.expectedNttl, ca.nttl)
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}
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if ca.pttl != test.expectedPttl {
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t.Errorf("Test %v: Expected pttl %v but found: %v", i, test.expectedPttl, ca.pttl)
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}
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if ca.prefetch != test.expectedPrefetch {
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t.Errorf("Test %v: Expected prefetch %v but found: %v", i, test.expectedPrefetch, ca.prefetch)
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}
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}
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}
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