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package redis_test
import (
"context"
"time"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"github.com/go-redis/redis/v8"
)
var _ = Describe("pool", func() {
var client *redis.Client
BeforeEach(func() {
opt := redisOptions()
opt.MinIdleConns = 0
opt.MaxConnAge = 0
opt.IdleTimeout = time.Second
client = redis.NewClient(opt)
})
AfterEach(func() {
Expect(client.Close()).NotTo(HaveOccurred())
})
It("respects max size", func() {
perform(1000, func(id int) {
val, err := client.Ping(ctx).Result()
Expect(err).NotTo(HaveOccurred())
Expect(val).To(Equal("PONG"))
})
pool := client.Pool()
Expect(pool.Len()).To(BeNumerically("<=", 10))
Expect(pool.IdleLen()).To(BeNumerically("<=", 10))
Expect(pool.Len()).To(Equal(pool.IdleLen()))
})
It("respects max size on multi", func() {
perform(1000, func(id int) {
var ping *redis.StatusCmd
err := client.Watch(ctx, func(tx *redis.Tx) error {
cmds, err := tx.Pipelined(ctx, func(pipe redis.Pipeliner) error {
ping = pipe.Ping(ctx)
return nil
})
Expect(err).NotTo(HaveOccurred())
Expect(cmds).To(HaveLen(1))
return err
})
Expect(err).NotTo(HaveOccurred())
Expect(ping.Err()).NotTo(HaveOccurred())
Expect(ping.Val()).To(Equal("PONG"))
})
pool := client.Pool()
Expect(pool.Len()).To(BeNumerically("<=", 10))
Expect(pool.IdleLen()).To(BeNumerically("<=", 10))
Expect(pool.Len()).To(Equal(pool.IdleLen()))
})
It("respects max size on pipelines", func() {
perform(1000, func(id int) {
pipe := client.Pipeline()
ping := pipe.Ping(ctx)
cmds, err := pipe.Exec(ctx)
Expect(err).NotTo(HaveOccurred())
Expect(cmds).To(HaveLen(1))
Expect(ping.Err()).NotTo(HaveOccurred())
Expect(ping.Val()).To(Equal("PONG"))
Expect(pipe.Close()).NotTo(HaveOccurred())
})
pool := client.Pool()
Expect(pool.Len()).To(BeNumerically("<=", 10))
Expect(pool.IdleLen()).To(BeNumerically("<=", 10))
Expect(pool.Len()).To(Equal(pool.IdleLen()))
})
It("removes broken connections", func() {
cn, err := client.Pool().Get(context.Background())
Expect(err).NotTo(HaveOccurred())
cn.SetNetConn(&badConn{})
client.Pool().Put(ctx, cn)
err = client.Ping(ctx).Err()
Expect(err).To(MatchError("bad connection"))
val, err := client.Ping(ctx).Result()
Expect(err).NotTo(HaveOccurred())
Expect(val).To(Equal("PONG"))
pool := client.Pool()
Expect(pool.Len()).To(Equal(1))
Expect(pool.IdleLen()).To(Equal(1))
stats := pool.Stats()
Expect(stats.Hits).To(Equal(uint32(1)))
Expect(stats.Misses).To(Equal(uint32(2)))
Expect(stats.Timeouts).To(Equal(uint32(0)))
})
It("reuses connections", func() {
// explain: https://github.com/go-redis/redis/pull/1675
opt := redisOptions()
opt.MinIdleConns = 0
opt.MaxConnAge = 0
opt.IdleTimeout = 2 * time.Second
client = redis.NewClient(opt)
for i := 0; i < 100; i++ {
val, err := client.Ping(ctx).Result()
Expect(err).NotTo(HaveOccurred())
Expect(val).To(Equal("PONG"))
}
pool := client.Pool()
Expect(pool.Len()).To(Equal(1))
Expect(pool.IdleLen()).To(Equal(1))
stats := pool.Stats()
Expect(stats.Hits).To(Equal(uint32(99)))
Expect(stats.Misses).To(Equal(uint32(1)))
Expect(stats.Timeouts).To(Equal(uint32(0)))
})
It("removes idle connections", func() {
err := client.Ping(ctx).Err()
Expect(err).NotTo(HaveOccurred())
stats := client.PoolStats()
Expect(stats).To(Equal(&redis.PoolStats{
Hits: 0,
Misses: 1,
Timeouts: 0,
TotalConns: 1,
IdleConns: 1,
StaleConns: 0,
}))
time.Sleep(2 * time.Second)
stats = client.PoolStats()
Expect(stats).To(Equal(&redis.PoolStats{
Hits: 0,
Misses: 1,
Timeouts: 0,
TotalConns: 0,
IdleConns: 0,
StaleConns: 1,
}))
})
})
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