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135 .IX Title "SSL_CTX_sess_set_cache_size 3"
136 .TH SSL_CTX_sess_set_cache_size 3 "2015-01-15" "1.0.1l" "OpenSSL"
137 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
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142 SSL_CTX_sess_set_cache_size, SSL_CTX_sess_get_cache_size \- manipulate session cache size
144 .IX Header "SYNOPSIS"
146 \& #include <openssl/ssl.h>
148 \& long SSL_CTX_sess_set_cache_size(SSL_CTX *ctx, long t);
149 \& long SSL_CTX_sess_get_cache_size(SSL_CTX *ctx);
152 .IX Header "DESCRIPTION"
153 \&\fISSL_CTX_sess_set_cache_size()\fR sets the size of the internal session cache
154 of context \fBctx\fR to \fBt\fR.
156 \&\fISSL_CTX_sess_get_cache_size()\fR returns the currently valid session cache size.
159 The internal session cache size is \s-1SSL_SESSION_CACHE_MAX_SIZE_DEFAULT,\s0
160 currently 1024*20, so that up to 20000 sessions can be held. This size
161 can be modified using the \fISSL_CTX_sess_set_cache_size()\fR call. A special
162 case is the size 0, which is used for unlimited size.
164 When the maximum number of sessions is reached, no more new sessions are
165 added to the cache. New space may be added by calling
166 \&\fISSL_CTX_flush_sessions\fR\|(3) to remove
169 If the size of the session cache is reduced and more sessions are already
170 in the session cache, old session will be removed at the next time a
171 session shall be added. This removal is not synchronized with the
172 expiration of sessions.
174 .IX Header "RETURN VALUES"
175 \&\fISSL_CTX_sess_set_cache_size()\fR returns the previously valid size.
177 \&\fISSL_CTX_sess_get_cache_size()\fR returns the currently valid size.
179 .IX Header "SEE ALSO"
181 \&\fISSL_CTX_set_session_cache_mode\fR\|(3),
182 \&\fISSL_CTX_sess_number\fR\|(3),
183 \&\fISSL_CTX_flush_sessions\fR\|(3)