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Fix: Rexpect backoff in the disconnect -> resurrection case as well #2856

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Merged
merged 3 commits into from
Mar 6, 2025
Merged

Fix: Rexpect backoff in the disconnect -> resurrection case as well #2856

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5c2fab6
Fix: Rexpect backoff in the disconnect -> resurrection case as well
NickCraver Mar 6, 2025
4afbb25
Fix disconnect tests, now that backoff is actually working...
NickCraver Mar 6, 2025
c9cd477
Add release notes
NickCraver Mar 6, 2025
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12 changes: 8 additions & 4 deletions src/StackExchange.Redis/PhysicalBridge.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -550,6 +550,12 @@ internal void OnFullyEstablished(PhysicalConnection connection, string source)
private int connectStartTicks;
private long connectTimeoutRetryCount = 0;

private bool DueForConnectRetry()
{
int connectTimeMilliseconds = unchecked(Environment.TickCount - Thread.VolatileRead(ref connectStartTicks));
return Multiplexer.RawConfig.ReconnectRetryPolicy.ShouldRetry(Interlocked.Read(ref connectTimeoutRetryCount), connectTimeMilliseconds);
}

internal void OnHeartbeat(bool ifConnectedOnly)
{
bool runThisTime = false;
Expand All @@ -575,9 +581,7 @@ internal void OnHeartbeat(bool ifConnectedOnly)
switch (state)
{
case (int)State.Connecting:
int connectTimeMilliseconds = unchecked(Environment.TickCount - Thread.VolatileRead(ref connectStartTicks));
bool shouldRetry = Multiplexer.RawConfig.ReconnectRetryPolicy.ShouldRetry(Interlocked.Read(ref connectTimeoutRetryCount), connectTimeMilliseconds);
if (shouldRetry)
if (DueForConnectRetry())
{
Interlocked.Increment(ref connectTimeoutRetryCount);
var ex = ExceptionFactory.UnableToConnect(Multiplexer, "ConnectTimeout");
Expand Down Expand Up @@ -679,7 +683,7 @@ internal void OnHeartbeat(bool ifConnectedOnly)
shouldResetConnectionRetryCount = false;
Interlocked.Exchange(ref connectTimeoutRetryCount, 0);
}
if (!ifConnectedOnly)
if (!ifConnectedOnly && DueForConnectRetry())
{
Multiplexer.Trace("Resurrecting " + ToString());
Multiplexer.OnResurrecting(ServerEndPoint.EndPoint, ConnectionType);
Expand Down
2 changes: 2 additions & 0 deletions tests/StackExchange.Redis.Tests/ConnectingFailDetectionTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ public async Task FastNoticesFailOnConnectingSyncCompletion()
try
{
using var conn = Create(keepAlive: 1, connectTimeout: 10000, allowAdmin: true, shared: false);
conn.RawConfig.ReconnectRetryPolicy = new LinearRetry(200);

var db = conn.GetDatabase();
db.Ping();
Expand Down Expand Up @@ -57,6 +58,7 @@ public async Task FastNoticesFailOnConnectingAsyncCompletion()
try
{
using var conn = Create(keepAlive: 1, connectTimeout: 10000, allowAdmin: true, shared: false);
conn.RawConfig.ReconnectRetryPolicy = new LinearRetry(200);

var db = conn.GetDatabase();
db.Ping();
Expand Down
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